my boyfriend mentioned to me the other day that he wants to explore having multiple sexual partners. this is coming after trying swinging together for the last 4 months. he mentioned our boundaries with swinging (specifically being in the same room during swapping) was the issue with why it wasn't working. he always hard trouble staying hard because the other man was bigger than him (which isn't true but he was self conscious). we've had a wonderful relationship with a few rocky patches, but generally i'd say this is the happiest relationship i've been in and we both know we will marry each other soon. i'm just stuck because i've always been monogamous and i only want him.. but i don't want to hold him back if that's something that he wants. i want to protect myself though from the intense feelings that come with your partner sleeping with other people. idk.. can a monogamous woman be with a polyamorous man and be happy still?

if we break up, i'll be heartbroken forever. but if we stay together and im not comfortable with polyamory, im afraid he's gonna resent me and just not be happy with me. but if i accept this, i know ill be jealous all the time and sad and depressed.