#@@#@!![27F] [24M] my boyfriend associated with five years wants me have sex with someone else, I don’t want to. Do I try it out to keep him happy? I love your pet but don’t know issue is a red flag?

I actually (27F) have been with my boyfriend (24M) for 5 years during which time we have experienced our ups and downs however matters are great but sexually not really. He want us to be adventurous and explore various things such as threesome (with another man involved), pegging, plus him watching someone else have sex with me while he timepieces. He say he loves me but wants to perform all these things but I am hesitant. Looking for advice and exactly what people think? I don’t feel at ease with threesomes as I really feel I would get very overwhelmed and I don’t want to have intercourse with someone else while he or she watches as I feel that easily wanted to have sex with somebody else I would be single. Simply looking for people’s thoughts. Apologies for mistakes English is not my first language.

TLDR; boyfriend wants to watch myself have sex with someone else, Really dont want to, nervous of implications of this further down the line