That definition makes close to zero sense.
The easiest way for me to explain it is that I'm not loveually aroused by anyone, but I still enjoy the other aspects usually associated with being in a relationship, e.g., cuddling or kissing, but only with another guy.
is it really significantly different from just being gay? Personally, I think not, but I kind of need to explain so people don't get confused when I mention I'm ace. And, no, I will never just identify as gay "to prevent confusion," or some bullcrap like that.