If you want to give him a couple of days to think about it, which is insulting enough, we leave it up to you, but no one has the right to “need time” to know if he wants to be with you. Be careful, unless they have gone through a delicate situation in which both need to heal, but here we are talking about a doubt based on insecurity or inexperience.
What yes You should try to have the conversation in a calm, even romantic, environment.but without trying too hard, since that “I don’t know what I want” doesn’t deserve a prize either.
You should also consider that perhaps your boyfriend does not share your plans and desires, or perhaps his feelings are no longer the same, so You can’t force him into a relationship he’s not sure about.. Plus, you don’t have to beg for love or attention.
We are not against there being doubts, nor against the fact that you simply do not want to have a relationship, but we do dislike that the only answer is “I don’t know what I want.”