You might also refer to him as something more detached, like my plus-one, prospect or literally, like, This is my date. Some prefer the tongue-in-cheek not-boyfriend. You can be coy (fancy friend) or a bit crass (makeout buddy) or cheesy (this is my luvvah) or even snobbish/fake-French.
What is it called when your more than friends but not in a relationship?
Less than a relationship, but more than a casual encounter or booty call, a situationship refers to a romantic relationship that is, and remains, undefined. A situationship is that space between a committed relationship and something that is more than a friendship, explains psychotherapist and author Jonathan Alpert.
What do you call someone who you are dating?
The words I use most are sweetie (for someone Im sweet on, dating regularly), partner for more serious/integrated relationships, and lover or friend/lover for friends and lovers.