Am I waiting for nothing?

I recently started a new job and have been there for a few weeks. While there, there's this really cute guy at work but he's married. He is a newlywed and actually got married a week or two before I started but he didn't know me then and I didn't know him.

I'm trying to not talk to him at all because I think he's attracted to me, too. When I first started, he would only talk to me about work and stuff, but lately, like today, as we were all leaving, we were all chatting about nothing in particular and he stayed by my desk to chat. Why my desk? Why not the other girls' desks or stand next to the guy? People who are also all in relationships.

I'm the only single one in my area of the office and nearly everyone there is pretty much taken or married - yet he stood by me. I don't want to date someone at work anyway because it would be a distraction, but it would be easy to go to lunch together and hang out since we are already at the same place and convenient. He also works in the warehouse and I work in the office area - so we don't see each other at all but for maybe like 5 minutes during the day to pass info about work so it wouldn't be that bad if it worked out.

I notice little things how guys start scooting close to me and stuff if they have a crush on me. I wish I didn't notice and was clueless, but I'm starting to sense he's starting to like me even though he's married.

I'm trying to keep it professional - trying but failing. I'm also kind of dating a guy outside of work, too, so I don't want to mess that up for a married guy. The thing is, I've been hanging out with my guy friend for 2 to 3 years and he still hasn't asked me to be his girlfriend.

Even though guy at work is married - at least that shows me he's not afraid of commitment and likes to be in a relationship.

I'd rather talk to my single guy friend because we're both single but every single time I meet a single guy he does not want a relationship and I'm sick of it no matter how hard I try to be a goody 2 shoes and remain faithful and go after single guys they don't want a relationship.

Do I have to break up a marriage to be in a marriage? I've known some people who told me when they started seeing their spouses, they were both dating other people and didn't care they were in relationships, but I'm not a cheater or a homewrecker and I don't want to influence him to cheat, either - because if he can cheat with me he will cheat on me.

Of course he won't admit he likes me at work because that would look bad on him since everyone at work knows he's married.

tl;dr I'm getting tired of having a crush on someone and finding out they're taken, married, or the single ones don't want a relationship. Am I waiting for nothing with this married guy? Has anyone hung out with someone married before but only as friends but then something later on happened with their marriage and he divorced and then started confessing his true feelings?