Finding an art style

Love Loop SS Infinity (working title until I can find a less objectionable one) is a story I've had on the back burner for a while. As it stands, the outline is only halfway done. This is the most I've ever outlined prior to the actual act of writing, which I've found necessary due to the structure of the story. Time loops. Veteran writers warn you never to write about time travel. As I sit here working out the details of the story, I'm understanding why!

I've also been trying to figure out an appropriate art style (my sketch from last night.)

My partner thought the guy on the right was a girl. I was going for "pretty boy", but looks like I went overboard.