[M] I told my wife that I am attracted to her sister

I’m happily married to my lovely wife but since meeting her sister for the first time a couple weeks back, I can’t keep it any longer and had to confess to my wife.

I was insanely guilty of this and felt like shit and didn’t know how to exactly tell her. It’s not like I’m madly in love with her sister or want to date her or anything, it’s just this “urge” or “lust” if you will. A wank would probably make me get over it lol. But it didn’t, and for 2 weeks now, I’ve been avoiding sex with my wife because I can’t stop thinking about her sister. It’s a shitty feeling and I feel awful about it.

Last night, I sat down with my wife and talked about our inner deep fantasies. I asked her to tell me and share with me anything she might want to “explore”. She confessed a few things but nothing too extreme or unusual I guess. This is where I started opening up and slowly confessed to her how I felt about her sister. I assured her it’s purely fantasy and nothing more. She was a bit upset I’m not gonna lie and looked hurt. What happened next took me by surprise. She said she can help me atleast control this urge and offered something by way of a handjob. She didn’t want to sleep with me just yet though because the thought of her being compared to her sister is too much right now and unbearable.