This is my wife, and she is a woman. So yeah, I love a woman

First of all, what do you want from her? have fun or projecting yourself in a serious relationship? if it's the last thing, don't do it. In short, there are many complexities in dating older women and expecting that one of them would become your wife, specially if she has already her own children

Anyway, your best bet, I think, is to just approach to her casually, saying something like: "Hey, we've been seeing each other quite a lot, and we didn't know our names. So what's your name?". Then at the end of the conversation ask for her number. Don't text her immediately, in fact, wait until night or the next day to do it

Then it's on your hands, Anon