Are all “Marines” the same?

Hey everyone, I’m 27 years old and my bf of 3 months just came out of the marines last year. Every time I say my bf came out of the marines or people find out I get some of the same comments. “A marine? You’re not afraid?” “marines are trouble” “so you’re going to get married in a month” and how they’re cheaters. Do you believe this? The only ironic part is he’s so open when it comes to marriage and kids, he want to propose within a year he said.

Are they truly all “unfaithful” and quick to “seal the deal?”

I’m really curious if everyone really does see marines like this

Edit- he’s not your “typical” guy, he’s not really manly lol he’s definitely a lover boy, always does what I want to do. Never has been disrespectful to me