Yup! You'll get the most "morning after" content with him if you made it all the way up to the makeout scene at the party. It can get sexual (but not a full hookup yet) depending on the new choices you make.
I've made y'all wait awhile for more Riley, so here's a non-canon CG I recently made for Patreon of him getting caught in a supply closet with NC17. Maybe it'll help tide us over a tiny bit 😉