Weed?

I’m pregnant, I don’t want to smoke myself lmao but my boyfriend wants to keep doing it. Before I got pregnant he promised me multiple times he wouldn’t smoke anymore once I conceived, but that hasn’t happened. He finally stopped, then decided he really wants to. He literally smokes like just one hit of a bong when he does it, he doesn’t get smacked. I don’t like having it around because it’s a temptation for me. I also don’t like him doing it behind my back because I would prefer he stopped with me. I feel selfish, but my emotions are getting the best of me. It makes me uncomfortable and hurts my feelings. He specifically said “I’m only going to smoke at night” and then it’s 3:30 right now, and he pulls out the bong like he’s gonna take a hit? I was like “I knew you were going to do this, and that’s why I was iffy on it. You literally just told me two days ago you weren’t going to smoke except at night.” Apparently 3:30 is night now. Thoughts? Helpful advice on how to not be as uncomfortable with his smoking, or would you be uncomfortable to? He doesn’t drink, he goes to work, he provides for me and my unborn baby. I just don’t like it and he thinks it’s just me trying to “control him”. Partially it is because I can’t do it, but then I’ve been thinking and I don’t want it around my family really. He would smoke away from the kids if he wanted to but occasionally smoking to me means once a month. To him I think it means once a day.