Casual Romantic
A person with whom you have a connection with, great chemistry and enjoy spending time with but are not in a relationship with. You have intimacy and enjoy doing romantic things with this person such as going to dinner and cuddling but you are not in an official relationship. You are basically in a situationship and still retain your independence as a single person. Casual sex is optional and you don't speak to this person everyday as that would blur the boundaries. All parties consent to this arrangement.
"Hey I just saw your boyfriend Jack last week, you guys are so cute together! "
"I really like Jack but he's not my boyfriend, we're casual romantic. We're going to the brunch together next weekend and then catching a movie, but I'm seeing Jason the week after. "
"I really like Jack but he's not my boyfriend, we're casual romantic. We're going to the brunch together next weekend and then catching a movie, but I'm seeing Jason the week after. "