Caleb wants to turn my sim into a vampire

I've only had it happened once but with my current sim both the regular social and romantic social are maxed out and Caleb has called to hang out at least 5 times now. I've been having my sim work too hard to go places so he's always tired so we haven't accepted.

I wonder if it's always like that when a vampire calls and says they want to ask something and if we wanna hang out if that's always going to lead to being asked if we want to be turned.
I think I'll test it and see when Caleb asks again.