When a female or male gets female or male partner and hangs out with them so much that everytime a friend calls there always doing something with their partner and never have time for you. Their partner is included in all their plans and are they are rarely ever away from them. On those very rare times they are away all the do is talk about their partner and even leave early to go see their partner.
You: Hey whats your plans for the night? i felt like i havent seen you in a long time!
your friend: Well i have a movie date then were just going to back to the house. we should meet up another time! ill talk to (their partner) and we will arrange something
You: okay talk to you later ( you not sounding surprised at all ,uttering the words boyfriend girlfriend syndrome)