Should I talk to him about this?

You should say something. Maybe about not being someone who appreciates having that type of teasing in the relationship. That you don’t mind being playful but there’s a line that crosses into mean-spirited or disrespectful that you aren’t looking for. And that you like him a lot and want to continue feeling connected, like you usually do. Then see what he does and if he acknowledges you and corrects the behavior or if he just gets defensive and even lashes out.

Whether it’s about stress or his character, it’s a red flag because both are bad. If he copes with stress by taking it out on other people, that’s bad. If he can respond maturely to your concerns and not repeat behavior that you’ve communicated makes you feel bad, then he’s got potential. But if he doesn’t, then it’s worth considering that life always has stressors and both people in a healthy relationship will have ways of coping with stress that doesn’t involve cutting down their partner. And if he can’t do that, he is probably not the guy for you.

Agree with what the others have said, and that you should talk about this. I’ll add this: Three months in is still the honeymoon period, when folks are theoretically on their best behavior, and haven’t let their baggage show. It’s still very early in the relationship– he should still be trying to impress you.

I’m not saying it’s ever okay to tease or pick on a partner when you’re feeling stressed (it isn’t!). But if he’s already showing signs of being inconsiderate this early on– saying things that make you feel bad, etc– it doesn’t bode well for the future, when you’re a more established couple & people tend to let more of their baggage out. He should still be trying to woo you at 3 months in.