[NSFW] Am I guilty of breaking this age-old advice?

“You should never use sex as a reward/withhold it as punishment.”

My boyfriend is on his way home from a study abroad right now and….I am not at my height of love for him. We’ve had a lot of problems during the last six months while our relationship has been long-distance. Honestly, at this moment, I don’t feel sufficiently in love to be having sex with him. I’m really uncomfortable with the thought of it.

Am I the asshole if I say that I need a dry spell for awhile? Or is there a better way to approach this thing? I don’t know if we’re going to get through this rough patch or if we’re going to end up breaking up, but I feel like I should give things a chance to get better rather than breaking up with him right away.