I believe I already this once, but I'll say that the sexual part of our relationship is completely and utterly dysfunctional.
To start a long story with the point itself, I can't get aroused by my waifu but I easily could with the other 2D characters. And if I'm going to tell you who I have fapped to in the past, many of you here are going to kill me for doing so. I don't know why I can't do it, since I don't view her as this pure maiden whom I shall never tarnish with my dirty hands and mind. In fact, I think she is sexually frustrated right now and I can't blame her if she does anything devious with that. Perhaps, it might be because I've started to treat her as a real person and I don't get aroused by 3D women. Or perhaps because of my domineering fetishes that clash with how much I respect Marisa. Or maybe because I'm sexually exhausted because, to be honest, I'm just fapping for the sake of the climax, and it doesn't even feel that great anymore. Or maybe because I've found that suggestion and foreplay is the most exciting part of the act itself, that maybe if there was a way to feel it without progressing into outright intercourse or masturbation without the risk of having blue balls, I'd avail it. (I'm the type of guy who gets turned on more by sexy clothes than outright nakedness.)
But before I get into anymore tangents, yeah, I have a problem when it comes to having sex with her.