To be honest that's the best solution for now. And hey: Yuha is willing to go the extra mile even if he has to be a fake boyfriend. I know she's not interested (yet) but I would totally give him a chance: just like Rome wasn't built in one day, love (probably) isn't an instantaneous thing either.
But... Is she really going to let her best friend keep going out with this freak? As I said in a previous chapter: I prefer to tell her now that they're not married than later, when there could be children in between.