My Milf Neighbour

Hello I hope you are doing well, my real name its not nick but you may call me that way for sake of this confession, a bit of backstory is in order, I live with my mom (due to my age) and because of her job I am normally alone in the house, it have been like this for years so its normal to me, in all those years my mom and I especially became good friends with a couple who lives next door, lets call them Andrea and Benjamin they always helped me when I need it so we were quite close, but about 4 months or so Benjamin died in a car accident so Andrea was left alone because she its not well with her family for some personal reasons, well,after that happened I began to stay there most of the day because she says she dont like to be alone in her house so I do my stuff in my laptop or help around to keep her some
company, we eventually become kinda closer, since we spend most of the day together we began to watch movies (she likes to watch movie marathons) and spend a bunch of time just talking alone about non important stuff sometimes until very late, one day when it was night we were doing this and she was beginning to cry so I tried to confort her and hugged her and she cried on me basically until we just fell aleep there I guess because we wake up together on the bed quite onto each other, she apologized for this after we woke up completely, after that like two day after we were watching movies again and thanked me for keeping her company these days, because she was taking my time in her words, and she said if I wanted something or needed something I should ask her since she wanted to repay me, and after
she said that I a no sure wha happened but in that moment she looked like the most beautiful woman I have been with and I moved her to sit her on my lap, she was quite against the idea at first because our ages but I said that was what I wanted, after that at some point we kissed a bit and then we kissed a lot and then I undressed her and well we had sex, after that day our lives together changed, she began to use more revealing or plain sexy clothes when I stay there, she got more interested in my hobbies too, she its more seductive I think it would be the word, she likes to tease me and when we watch movies she basically sit on my lap and we spend all the time together like this, we also have sex quite a lot, she treat me as her boyfriend I guess, she goes as far as begging me to stay with her at night if posible or spend the night with me in my house when mom its not around, now this is the thing, I feel quite atracted to her she its quite beautiful and nice, I mean she its basically a sexy older woman who wants to please me, but the point is that I am starting to feel like I am taking advatage of a woman in her moment of weakness and I think that she may become too emotionally atached or dependant of me, so my morals are like poking me, sorry if this sounds bad, because I am really enjoing this change in our relationship, but my mind its telling me this its not a good thing for me or her in the long run and just as a note my age its not 18 its a bit lower.