I’ve read through all of the comments (even the novel) not to be harsh but you sound insecure, to be secure within a relationship you have to be secure within yourself first. it’s one of those things where if you can’t be,you won’t have. Like if you don’t love yourself how do you expect someone else too? you don’t respect yourself how do you expect to be respected? Everything starts with you man, stuttering sucks but holding your stutter over your own head? Been there and It’s really a shit idea it’s a giant antagonist to your personal growth. If you think women will cheat on you because of your stutter ALONE then that shows shallow thinking like the guy who wrote the novel said, women are deeper than you may currently think and they’ll stick with the guy who knowingly lacks in an area but treats them right,respects, and trust them rather than running to the guy who goes after every girl in the bar. You can’t get jealous or upset if another guy makes her laugh because that’ll send red flags to her telling her that you either don’t trust or respect her even if that’s not the case. I suggest letting other guys make her laugh if they’re funny they’re funny who cares you bc should want her to be happy every second of the day even if you’re not the one in that second making her be because when the time comes for you guys to leave remember, at the end of the day after whatever those guys try and say she’s leaving with you for a reason so relax! stuttering shouldn’t ruin your life and it won’t if you don’t let it. Much love man and hope you have a better outcome next time around.