for Not in Love by Caroline Adderson and Ben Clanton
Isabel loves Jasper, and it's making life complicated. He just wants to play knights and dragons with Ori and Leon, but Isabel makes him play babies and tries to set up their wedding. The only good thing about Isabel is the trampoline at her house. But will the highs of their trampoline playdates be enough to cure Jasper's girl-itis? Jasper John Dooley: NOT in Love is the third in a series of chapter books featuring a charismatic and funny central character. An only child with active, loving parents (and a most impressive lint collection), Jasper John Dooley is a true original.
Publisher description retrieved from Google Books.