Insecure about husbands charm attracting others

My husband and I have been married about 4.5 years. We have two young kids together and I have one from a prior marriage. I’m 35, he’s 37.

He has dated ALOT of people and I was more of the serial monogamous type.

I think we’re equally attractive and objectively so, both smart, ambitious, etc. But for some reason, it bothers me that he seems to attract people even unintentionally. I can count on one hand ever having been approached or hit on in public. Granted, I rarely went out to bars or clubs, where he traveled solo for a few years and spent several spring breaks in Cancun if you catch what I’m throwing out.

His past has always bothered me but I’ve mostly gotten over it. However, it seems like he has this magnetism that draws women in and I guess I’m jealous because it scares me that he’d want to leave me and that if he did, I would be alone a long time because no one ever approaches me.

Not sure what I’m looking for here... just some weird feelings I’m trying to process.