Right, home from work now so figured I'll respond to what I can. I appreciate the responses received, while I don't agree with some of what has been said I do appreciate the time taken to post the replies, and I think the whole points of this was to get differing views on the situation.
I suppose a bit more background about me, I'm recently divorced, although I have been seperated from the ex-wife for over 3 years. It was, until 9 months ago a very amicable arrangement, it is now anything but amicable. I was foolish, too trusting, and it resulted in me being completely and utterly financially bent over. I think this is part of the reason I've been taking things incredibly slowly, the truth is I do think there could be a long term future here but I'm not rushing into anything because I've been badly burnt. I've always been clear with H (from now on I'll refer to her as H) over what has been going on.
Do I love her? I certainly have strong feelings for, I care about her a great deal, but then if I can't say deep down that I love her then I guess I probably don't - thats how it gos, right? Before saturdays disaster I think I was a lot more invested in things that I'm feeling right now, I was starting to think seriously that there could be a future here, and this has given me some severe doubts.
H used to be a big girl, when we met she had a whole heap of confidence issues, she has been cheated on by multiple guys before so its left her a bit jaded. When we first started seeing eachother these issues were very apparent, but over the last 6 months she has really grown. We go to the gym together at weekends when we see one another, she has lost 4 stone in weight and looks fantastic, I'm punching well above my weight here. Thats what confused me about the flirting accusation, she was the best looking girl on the table by a country mile, I told her this. I have also never given her any reason to think that I would ever be unfaithful, I wouldn't want to hurt her. I think the influence of alcohol brought back some of the confidence issues that she has, she just doesn't seem to fully grasp what a catch she is.
Since Saturday there has been some messaging back and forth, not at its usual levels, I've not been ignoring her. What I meant by 'not being bothered' is that I've seen the messages come through and for the first time its felt like a chore to reply, like I didn't really know what to say to her. It could well be an overreaction on my part to that one drunken incident, it probably is, I'm not perfect.
I see the general consensus is that I should end it and let her find somebody who can be more invested in a relationship with her, its not bad advice. I'm going to see her at the weekend, we'll have a sit down chat about where things are going and see where we end up.