Most Helpful Guy
I feel like you're either trolling or are dead serious...
Anyways if you're serious
You need to know that if he's cool with some other dude laying down the pipe on you. Then chances are he is sleeping with other girls OR he has mental issues.
So staying with him is your call. Honestly just the fact that you wanna bang two guys at once and that he is ok with you banging someone else tells me that your relationship is pretty much dead. So either have your fun and leave or just leave completely3
Most Helpful Girl
You're so pretty! He's probably proud of that and wants to show you off. Personally I value loyalty so I wouldn't do it but it's entirely your choice. If he pressures you or makes you feel uncomfortable just tell him no, and if this ruins your relationship and you don't like how he's treating you just leave. However if you still love him and want to be with him, follow your heart but pay attention to whether your relationship is healthy and whether he puts pressure on you. Hopefully he'll be fine with you just making your own decision about being "shared" and will shut up about the topic after that!0