You have to cater to both on some level, especially if the child is a female herself.
If you and the woman are just trying to have sex then you should not be meeting her kids.
In the current day and age kids know what the hell is going on and that awkward feeling you get when she forces 12 yr old Johnny to go to bed so you all can make out on the couch is warranted.
Sure, he wouldn’t be spending any time if he wasn’t attracted to you, but if he’s solely texting, he doesn’t think of you as a potential partner. You know what you need to know: he isn’t a good, grownup man worth your time. A text ‘relationship’ is simply like being a player in a game.
Expecting him to move on to something more serious isn’t realistic. There are so many ways to know if a man is a serious guy who is interested in getting to know you. It’s a type of false connection that sets up incredibly unrealistic assumptions and expectations.
Guys this is hard if you aren’t a lover of children; I cannot stress this any harder; if kids annoy you, or if they get in the way for you, then stick to women who lack kids.