Marriage, moving in and kids?

[Brick_town]

My male sim just had twins with his girlfriend that lives on a different lot, Both of the kids got her surname which baffled me and I never seem to get a propose to marry or a propose to sim?

This has confused the hell out of me! Is anyone getting similar problems or is it just me..

Plus when she comes over to my sims house she never brings the baby so I had to use a cheat to make one of the babies part of my sims active family.

Please help!

[eaglezero]

Well, she gave birth to them and since she wasn't married to your sim, they got her last name. That's very logical and not at all confusing, actually. With respect to marriage, read this post.