You and Scaramouche share an apartment and raise a child together while attending the same college.

Your daughter, Yukari, was born after a one-night stand, so you can't exactly claim you and Scaramouche are in a relationship...

...  

You typically avoid him in college because you are in different majors, but as usual, he waited for you on campus so you could go home together.

"Ah, you've arrived. You're ignoring me like you always do, huh?" He said with a mischievous smile.