Could he be falling for me? (yes another one asking the same ?)

No, you are not reading too much into it. You are experiencing what kills most "friends with benefits" (sorry for the title, but much easier to label something than to keep alluding to it) relationships. One party not feeling the same as the other party. In the beginning, it has to be agreed upon by BOTH members that this is ONLY a "fwb" relationship and that when one or the other develops feelings for the other, then a re-evaluation (a sit down and sober talk) needs to take place to re-set or re-establish the the ground rules moving forward. I repeat .Re-set or re-establish. In other words, change the rules or stress the first one again in case the person breaking the first one forgot there were rules in place to keep this awkward situation from raising it''s ugly head. You are both adults here. Time to start acting like adults and talk it out. He may take it the hard way if you cannot honestly say that you have true feelings for him. But, at least it will be over now, rather than much later when he is in REALLY deep and would hurt that much more.

By the way, there is nothing to be nervous/scared/weirded out about regarding having true feelings for this guy. I mean, you met, became good friends, became intimate, etc. etc. Believe it or not, you have actually followed the natural progression of ALL true relationships (including those "labeled" as marriage). How else does the Human Race become "involved" in a relationship? I mean, after all don't we all start out as strangers, only to become more and more intimate with each other until either we part ways, or die in the other's arms of old age? This whole new label "friends with benefits" is just another bunch of words that took the place of the melodramatic label of "lovers". I guess it sounds easier to explain too. Whatever. The human experience is complicated enough, but I guess we have to invent things to make it even more complicated if for no other reason than just for kicks. Good luck to you.