I've been working for my new company for seven months and I have a colleague, younger than me, who makes it so obvious in the most pathetic little ways that he dislikes me, lol.

Has anyone else had this problem in their workplace?! and if so, how did/do you deal with it?

Bump, lol. I need advice.

if he is younger, are you sure its dislike and not

im going to be a short stick because i secertly like you?

Ask him up front if he has a problem and why, but do so politely - you may be wrong. I found that's the more mature solution and it usually baffles the "disliker". I've been both the person feeling disliked and the one disliking for no reason*. It would definitely throw me off, if someone confronted me about my childish behaviour (him, not you). 

* By that I mean disliking people without really knowing them. I'm normally a good judge of character, so if I sense something is off about people, it normally turns out I'm right. 

I kind of suck up to my bosses so I've had people dislike me in the past lol. If I think it's because of that, I just ignore them. I only care about what my bosses think of me, not my coworkers. Sometimes it can make life difficult, but I just try to be nice to everyone and if someone is rude to me, that's their problem not mine.

The other reason I've had coworkers dislike me is because they are threatened of me, so there's nothing I can really do about that either.

But like Svea said it never hurts to ask. Maybe it's something small that can be worked out?

Or like Maha said maybe he's got a crush lol

I have been the coworker who others think doesn't like them. Why? Because I have social anxiety and it is extreme.

What exactly is he doing that makes you think he doesn't like you?

I would Like to know a little more about his behaviour before giving advice.

I have had a lady who was threatened by me (and loved drama) try to threaten my job (She isnt managment and Had no right to) I didnt back down and let her walk over me, which I dont think she expected and She has since stopped.  As Such yes being direct and asking if maybe there is something you are doing that he doesnt like, maybe its a nickname your calling him or soemthing. If you arent working with him directly I would probably just ignore the situation if it isnt too bad.

Nothing awful, it's just a gut feeling and his actions (although very minor and petty) just make me feel incredibly uncomfortable.

For example, he'll always make conversation with other colleagues, but wouldn't ever speak a word if it were just the two of us in the office. Whenever I offer to make him a drink, he will decline, but then will either go and make himself a drink or will accept a drink from another colleague. He's removed me as a friend on Facebook. Whenever I ask for any help or advice on anything work related, he will just shrug his shoulders and claim not to know, yet when a colleague asks for help he'll move mountains for them.

So like I said, just small, petty and very indirect things!

 I had someone at work do similar things and I thought she didn't like me. I started doing them back to her and she was all OMG why do you hate me? And I was like well I treat others the way they treat me.. And she honestly had no idea she was doing it. We're not friends though so nothing has really changed, she's just one of those people that rubs me the wrong way and I couldn't like her if I really tried lmao.

Have you posted something on FB that he could have gotten offended by?

Ash, that’s the point I’m getting to with Chris, lol. It’s all so petty so I doubt I’ll raise it with him, or if I do, I just need the right moment to do so. 

Con, I highly doubt it. I very rarely post anything on Facebook anyway - and he’s definitely not the kind of person who would get offended by anything on there! It’s jusy one of those things I guess. You’re not always going to be everyone’s cup of tea.

Communication is key, so maybe when it's just you two, ask if you've done anything to upset/offend him. Otherwise, it'll fester and could turn nasty. 

hahah the way that I would deal with this is that every time you are alone together I would just force conversation with him. For some reason he might just be awkward and uncomfortable with you? I wok with a mostly Japanese workforce and they are quite shy, and really dont know what to make of me, but im slowly getting them to all warm up to me.

Situations like this is pretty much the reason why I don't try to make friends with my coworkers beyond a good working relationship and I don't add them on social media until after we no longer work together - too much room for weirdness or drama. I think in the end it may be worth asking your other coworkers if they've noticed similar behaviors, if not bringing it up to your manager. I feel like direct confrontation isn't likely to end well or be productive.

Also some people just dislike others for no apparent cause - maybe a personality difference?

Maybe because you're female? Or is he "normal" around other women?

If he's always been like this, he's probably threatened by you (especially if you're older and in a higher position than him, because misogyny is always a possibility). He might not even realize he's threatened by you, but in my experience, that's usually why people form opinions about you before they even know you - because something about you makes them feel inadequate or uncomfortable, but it has nothing to do with you personally. So in that case, I would ignore it.

If he suddenly started acting like this (which maybe he did since you said he deleted you from Facebook?), then I think you need to talk to him. Next time he does something outwardly petty, just be like "Did I do something to offend you?" and see what he says.