No part of this has ever been about not liking you. Yes, you make a lot of questionable choices but most people do when they're your age. Some of us continue to make questionable choices. It's always been about April. She's my daughter. Granted, she's from an alternate future, a clone of May, and, like, nine or so years younger than me but I love her like she's my own. I worry about her and this grumbling about her dating is just that. The hard time I give you is just that. I would do the same thing if she was dating the Rogers kid or a younger, age appropriate Steve Rogers. That one would be weird and have to be balanced with my own tendency to fanboy over him and, yeah, probably some weird sort of jealousy. My feelings in the vicinity of Cap are as complicated as my feelings in the vicinity of Stark.
The point is it's never been about not liking you or hating you. It's this weird thing about being a parent and wanting to protect someone you love, someone you'd willingly give your life for, from any sort of perceived harm. No matter what I think about you the threat persists that you may, one day, decide to break her heart. Dating you was her decision but I will blame myself if that day comes.
I trust April's choices but being a parent is a difficult balancing act between trusting your kid and wanting to protect them. That's all this is.