Do you think it would be wrong if I asked my friends not to have sex with each other?
Is it going to cause problems for them?
Yes, they still have a lot to do. It's going to be a lot for them to take on new responsibilities.
Even if you think it is for a good reason, you shouldn't interfere in the other person's relationship. It will offend them and they won't want anything with you.
Oh, I'm so sad that I got hurt.
It shouldn't hurt you for them to hook up. Things will be okay just let them do what they want.