i do think that you should wait longer, because it does seem like it may be a rebound. it’s only been a week, you were together for 5 years, get yourself adjusted to the single life before getting into another relationship. plus, i just think it’s way too soon for that and it’d be like pouring salt into your ex’s wounds. you want to be fully over your ex to give anyone else a fair shot. your feelings may be completely valid, but i definitely think you should wait a lot longer to figure it out and make sure that it’s not just because you’re used to having someone there.