Sounds to me to be an all around bad situation.

First, if he likes you then why would you bother with a guy that can't tell you the truth about where you stand with him? I wouldn't stick around for a wishy washy non committal person like that, especially if I was attracted to them and it sounds like you wanted something with him originally and in this case, it's just going to keep causing you stress. Wondering where you stand and if he'll ever come clean about how he feels.

If he indeed has a gf now and is telling the truth about that, then wtf is he doing texing with you 24x7. If he's talking to you all the time where is this gf of his and if he really has one, I worry about the fact that he's talking to you all the time instead of being with or talking to her as much. The behavior he is showing with you is what you do with a gf when you have one. So this is a bad thing too. either he has a gf and he's neglecting her or he's lying about having a gf and has no backbone to commit to the one he clearly is interested in, you.

I'm not sure that there is any kind of upside to this. It might be nice to know he likes you but does it really matter since he obviously cannot own up to that?

I say if you cut it off you've probably dodged a bullet.