just a protip here. you don't go round calling your partner a lover. it's slightly disrespectful.
Assuming he's talking about the english word. "Lover" is often used to refer to someone you are involved with physically. it's often used in the context of cheating in a relationship.
in a lot of english speaking countries yes because they have made it look like it's disrespectful in terms of media and literature. everywhere else it's fine.