I think I might leave my relationship, even though everything is fine right now.
Why do you want to leave your relationship if you're not having any problems?
I think it's the right time to leave.
You should talk to your partner about how you feel. They might be devastated to hear how you feel and they deserve an explanation.
My partner will be fine and can move on to a new relationship.
If you feel like you need a change, talk to your partner about what changes could be made. It's harsh to just quit the relationship without telling them about your thoughts and feelings. You should get some sort of closure for your relationship.