I suggest that you offer sex to Barney at least once every day for a while. Worry about romance a bit later. For now, just let him know that you want to have sex with him daily. If he rejects you, then that becomes his problem, not yours.
You have to start somewhere, and it is obvious that you are willing to do the work.
All the best, -NOPkins-
I will ferret out an affair at any opportunity.
-An affair is the embodiment of entitlement, fueled by resentment and lack of respect. -An infidel will remain unreachable so long as their sense of entitlement exceeds their ability to reason.
