Getit, I was just like you when I first met DP. I was looking on his Facebook (he had added Me) and saw him in photos with his ex. I sent him a message saying "is the blonde lady your ex? She's stunning, what the hell are you doing with me?!" His reply, "the ex is not a factor, you are beautiful" and he has reiterated this every day for the last 4 years!
She is a proper Barbie, all fake boobs and hair extensions. I'm now 2 stone heavier than when we met, (so at least I have big boobs now and they're all soft and natural, unlike the ex's 'hard coconuts' that had become encapsulated ) short dark hair, and I'm 8 years older than her.
However, he will sit and look at me in awe and tell me how beautiful my eyes are or that I have a kind face and that I'm fundamentally just a lovely person. Something it is clear that his ex was not.
Under all the make up and the gym bunny-ing, she was fundamentally plain and very selfish. I now have no doubt why he is with me. In the early days he tried to make me feel better about it by telling me x would have him back in a heartbeat but he wasn't interested. This actually made me more wary of her at the time, but now I see it as the ultimate compliment, as he could have put his family back together and had the trophy girlfriend. Instead he chose me.
I am not slim, tall, blonde or traditionally the sort of girlfriend who will turn heads when he's out with me, but luckily he cares more about what we have together than about what other people might think of his choice of partner.