I would like your thoughts to if it's ok for me to do this or not. Please comment below. I have back pains all my adult life, which required me to get massage therapy on regular basis. Hence, I have acquired a good sense of how muscles are structured and best ways to massage them. Of course great deal of my own research has been a part of it as well. Now, my wife thinks I give great massages. When ever she has pain in her shoulders or any muscular tension, she asks me for a massage and feels great after. She has been telling everyone in her family how good I'm at it. My mother in law get migraines pretty often. My wife has asked me to massage her, which I obliged. To my benefit, she feels relieved almost immediately. My mother in law had fell few years ago and had sustained injury in her lower ribs. Doctors didn't take care of her and now she starts to feel pain in her upper back, shoulders and ribs. Which eventually makes her get migraines. My wife has suggested me to massage her. My MIL greatly appreciates me for them as she feels much better after. As of last couple times, I have brushed against side of her breast. My MIL didn't say anything, but I got instant hard on. My MIL has much bigger tits than my wife. I love big tits and had always liked my MIL's figure. On the side note, my FIL and MIL doesn't have perfect marriage, so in back of my mind I had always wondered how sexless is her life. I would love to bang her to fill her sexual needs. My MIL had serious migraine yesterday and called my wife if she can come over to have me massage her. Knowing how bad they get for her, my wife agreed for me. When she came over, I had her lay on bed in our guest room. She rolled her shirt up to her shoulders laying face down. I asked her to remove one of her top layers to make it easier to access her shoulder blades, she obliged. Now, I I had clear view of her breast from the side. I massaged her back, shoulder blade and worked my way to her ribs. I massaged around her ribs and touched side of her breast. after about 30 mins, I asked to flip on her back so I can access her front ribs easily. She did and puller her shirt down to cover her stomach. I asked, I will move it up to her ribs and ensured, I'll cover her appropriately. I rolled her shirt just under her tits. I started to massage her ribs, she screamed in pain. I slowly continued to massage her ribs and lightly rubbing under her tits. I eventually moved up to center of her chest and going between her tits. Then I asked her to sit up so I can massage her shoulder. She complained about her ribs again, I went to work on her ribs as she was sitting. As I massaged her ribs, her tits we sagging and in my way to reach her ribs. So I lifted her tits with top of my hand. She didn't mind. I really enjoyed. I think I touched her nipple during this. We stopped as I didn't want to push it too much. She was very thankful. I asked her to come again this week so it doesn't flare up again. She agreed. I mastrubated with the thoughts and feelings. it was a great experience. My questions is should I feel guilty for taking advantage of my mother in law? or continue to enjoy !