This guy from my job is driving me crazy... need advice
So I don't really know how to say this so I'll just go out and say it: I've been working in an office for almost a year (it will be a year in the next few months) and I've been having a really hard time trying to work there because of a co-worker. He started months after me and since he started working with us, he can't get his eyes or hands off me (and I can't say that I mind). It started very normal- he was a nice guy just trying to get to know me. He asked me what I did outside the office, what my hobbies were, my interests, etc.
I started to notice that things got a little accelerated after maybe two months of talking to him, he started acting different towards me. Looking at me more, wanting to spend time with me more within the office, he basically always had to be AROUND me. Always found a way to be in the same space I was. He helped me with projects when no one else would, was kind to me (listened to me, gave me career advice), bought me lunch on more than one occasion, offered to give me a ride home on more than one occasion, has done nearly everything under the sun to try and get me to laugh, when I went on vacation he called me the day I came back to tell me he missed me, he's told me he loves to make me smile and laugh... this has been going on for months. And again a lot of the physical attention- a soft touch on the arm, shoulder, back, etc. and very obvious sexual questions that he doesn't ask any of his other co-workers. Lots of eye contact and sighing and very close chats- he is always very physically close to me. I felt like he was giving me mixed signals. Then I found out he had a girlfriend and every time I would ask him about her he shrunk away and avoided the topic- he's been having relationship issues with her because she is too possessive.
When I found out I was a little disappointed, but not that much. It's hard because he kept coming on to me. And I already had more than a crush on him. I just wanted to know what his deal was because I was confused. More time has passed like this but we stopped talking for quite some time because I confronted him about his mixed signals and he didn't give me the answers I thought he would give- he basically evaded my questions and left me even more confused. I was finally able to pry an answer from him recently, we were sitting in the office just relaxing, and I could feel the sexual tension- I wanted to make a move and told him about it and he posed the question- why do you like me so much? And he started to say something about him being a jerk off and all... I was left speechless and I could do was ask more questions. I asked what kind of attraction he had for me (My gut has been telling me the entire time that he only wanted a sexual relationship with me, but every time I tried to make a big move, not a grab or pat on the back more like a kiss, he's withdrawn, despite all the sexual attention he gives me- leaving me more puzzled. He continues to deny that he has any feelings for me and won't even admit that he gives me sexual attention even though everyone else in the office knows it's true!) and he said he was sexually attracted to me, before someone walked into the room and we ended the conversation. He keeps asking me what my plans are after my contract is up and my job hits one year of being here, he's asked me at least three times, and I usually change the answer. But I wonder why he cares so much, I haven't asked him...
My big question in all this is- what the hell is going on here? I would like to think this guy just wants to bang me but why all the hesitation, why doesn't he like it when I come on to him but he likes it when he comes on to me? Why all the denial about how he acts towards me? Is it possible that he is conflicted because he loves his girlfriend (he doesn't talk about her much to me) but desires me? I honestly think he is confused (and he is confusing me) and doesn't know what to do. He has never asked me out on a date or even to hang out after work, but he tries to get me to walk in the same direction he does to get his train to go home or just asks me to spend some time with him (and gets offended when I don't).
I know this sounds super wrong and shady and incorrect, because he is my co-worker and is with someone, etc. but I just need to know what's going on so I can stop focusing on him and focus on my job. Some days it is impossible to work there with him. All he's told me is that he is sexually attracted to me and I know I am to him. I'm not even sure he likes my personality or likes me at all outside of this context. Any feedback about similar personal experiences would help.