Loki and Sylvie as a romantic couple sounds weird

I am really curious though, if Loki falls in love with another version of himself...is that considered a incest relationship? Their both of the same blood, and I feel that the episode four was telling us that they were falling in love with each other. In a way, she sort of like his twin sister and I was sort of hoping that was the relationship they were going for. I don't feel that they should be a couple, but if they are, I have to say: Please don't. I really hope they don't try and make Sylvie change her name into Sigyn, Loki's wife in mythology.

So I ask again, is that considered incest?