Sorry, this turned into a bit of a mammoth post.
I think you need to distinguish between two behaviours (both a little bit pathetic): pride in competitive male attention and bragging rights ('She was with me at lunch and this guy was checking her out') and actual sexual interest ('She's gorgeous, I want to sleep with her/be with her'). They are not the same thing at all!!
In particular: the former has very little whatsoever to do with the personal. It's social, and it's all about competition between men. It's the male version of the woman who is just compelled to flirt all the time, not because she's interested in the men she's flirting with, but as an act of oneupmanship with other women. My guess is that his slight bragging about this to you is a sign of how secure your relationship really is: he wants your admiration of how glamorous and attractive he is!! Which means you still have that spark! 
It's easy to assume that other people, particularly people in the media spotlight, are superhumanly attractive not just physically but mentally too. But that's not always true. Personal story alert: I dated an actor for a while, not a major star but someone C-list who is in TV and big enough to be on billboards occasionally - and the glamour wore off very quickly, revealing that he was, in reality, a really normal and rather boring person. It was fascinating, though, to watch the spell that celebrity casts on other people from the inside of knowing the person who leaves pants on the floor and can't wash up a coffee cup. It is like living in two places at once: the normal world (which of course is the one we all inhabit, however famous) and this parallel 'verse where every gesture of a celebrity is kind of endowed with strange, magical powers because people really believe there is a world-through-the-mirror that works very differently. There is almost a saint-like veneration: I can remember watching a very pretty and slightly drunk girl try to steal his dirty napkin (ew).
When DH and I first got together, this guy was my previous ex, and DH was completely thrown by this. We were in Tesco, and a DVD of a terrible film the guy had made was being advertised, and he looked at me suddenly and said 'I can't give you this - I don't know why you want to be with me'. It was really heartbreaking, because all I wanted at that point was DH. I just knew he was the right one, but I couldn't convince him of that.
So my point with this digression is that I think you are really, really underrating what you have to offer. When you are up close with celebrity, you find they are just normal people, often slightly screwed up by having to negotiate levels of intrusion and attention that are quite hard to handle. The spell is broken and what becomes interesting is watching other people who are still under its grip. My guess is that your DH's comments about other men are very much coming form that place. I don't think, though, that it would hurt to talk to your DH about your feelings about yourself (not really about her, but about you not feeling adequate). I imagine he will rush to reassure you.