A threesome involves three consenting adults participating in sexual activity at the same time. Either the threesome would involve you, your boyfriend and another girl, or you, your boyfriend and another male. You’d be able to see your partner being sexually active with another person, which can inspire a lot of jealousy. There are also issues of trust and safety to consider, as well as contraception.

Sex is more than just a physical activity, and the emotional side of a threesome can be difficult and destructive. Talk to your boyfriend about why he feels this is a good idea. Things that are harmless as fantasies are often very different in real life, and it may be better that this is better kept as a fantasy.

It sounds like you have already decided what you should do – you don’t seem too comfortable with this relationship. Making you feel guilty and getting angry with you is definitely a form of abuse, and you don’t have to put up with it. You’re absolutely right, in any respectful relationship you should go at your pace and you should only do what you want to do. It’s your body, your rights and your life. Why not write him a letter, explaining that although you care for him, the distance and the pressure that it puts on your relationship is too much for you right now? Talk to a trusted adult, friend or your school nurse about how best to make sure that you can break things off safely. Good luck – let me know how you get on.