Confusing office situation

[MissK]

Ok, this is the situation:
There is a guy at work who I have liked for months but he has a gf who also happens to work in the same office. They have been on/off. Recently he started messaging me and we have been flirting a lot ever since. He told me also that he'd describe his relationship with his current partner as 'boring' and to me, since they got together they have just never looked 'right'. He also told me that he liked me etc etc and it looks like something might happen.
I dont believe cheating under any circumstance is acceptable and have made that clear to him. I really want to do something with this guy but not while he is going out with someone else. I do realise also that if he acts this way towards me while he is going out with someone he could do it again if we were to go out. Its just confusing me why he still flirts with me and says he doesnt like his gf that much but I dont see him exactly breaking up with her.
I really like this guy, what do I do?

[Asip4u]

Its just confusing me why he still flirts with me and says he doesnt like his gf that much but I dont see him exactly breaking up with her.

Your answer is pretty much there. She may be boring but if he doesn't dump her and still wants to flirt with you, then you know which type he is.

[shh!]

Obviously he wants to have his cake and eat it, too.

[Tone]

Exactly. There is obviously something still there he wants/likes, and probably the only reason he tells you that about his g/f is because he wants you to think it's okay and wants to trap you in his web of lies and deceit. Glad you're smart enough to see these things for yourself, I'd stop messin with him, unless a few months into your relationship when he gets bored you want to be on the other side of the fence here, and be the "boring" g/f he's trying to cheat on.

[JonathanP]

He must not want out too bad since he is still with her. / red flag up. Plus if you do something with him and you start dating. That will always sit in the back of your brain and bake for as long as your with him. He also seems like he is a person that can't stand to be out of a relationship. So he hangs onto the one until another comes along. /red flag up again.

[MissK]

Thanks for your replies. It just sort of confirmed what I was already thinking but didnt want to hear but I think I did need to hear it. He's continued to flirt with me and has even made little comments etc within earshot of his gf which surprised me. I've just started to act more disinterested in him and more professional but the funny thing is is that it has made him try harder and flirt more so I'll just wait and see what happens. I suppose that if he really wanted/liked me he'd break up with her asap. Im just not going to get caught up in something that will come back and hit me in the face later.

[Tone]

Good, stay strong.