I think I have been seduced, or something...?

I need abit of help guys, last weekend i slept over at my good friend's house and I've know him for at least 6 years, I'm 16 now. My friend was sleeping and I was going to the bathroom and I walked in and My friend's mom was on the toilet, I was really embarred because she had no top on, or a bra but it was dark and I didn't notice much, she said "oh, its okay I forgot to close the door, its my fault" so I quickly left in a hurry, completely forgetting the fact I had to go to the bathroom, It was late around 1AM and I was really nervous and felt so dumb for walking in on her, I wanted to apologize because I had forgot to, so i thought about what i would say for a few moments and walked into her room where I found her watching tv (she had her PJ's on now) and I said I was really sorry for walking in on her, she told me it was fine and every young man should she somethings even if it was accidental, she asked me if I wanted to talk about it and I said okay, she told me to come sit on the bed with her, and I thought nothing of it at first, but as we talked she was getting quite personally, she asked me how often I masturbated, I felt abit uncomfortable but I told her because I felt safe with her, she then asked me if I saw her naked in the bathroom, I told her I saw outline but nothing re veiling, what she asked me next is very we rid and I'm pretty sure its wrong, she asked me I wanted to see her again in the light, and I hate to get off topic, but my friends mom was very attractive, she had very large s and even though she was abit over weight (not like sumo, just abit chubby), I really was abit by this, so my inner horniness took over and I said yes, she proceeded to take off her top and bra, and she told me to feel her , she then took my shirt off and started to feel my in my pants, I was feeling quite uncomfortable, because its my friends mom, like come on that'sjust werid, but she kept telling me 'its a learning experience, its all for the better', and i beilievd her, she then started to stroke my and then she started to suck on it, but i had to get out so I told her I wasn't feeling good and she said, okay and she gave me a kiss on the neck, I then went to my bed in the quest bedroom and feel asleep the fastest I ever have, the next morning I tried to act like nothing had happened but when i was in the kitchen while my friend was in the shower, my friends mom was flirting with me, and she asked me if i had fun last night and such, i haven't told anyone and I don't know what to do. I have been thinking about this since it happened,