Can i fuck a friend's mom? (she's been single for a while)

So basically there's this friend who I don't really know that well but I have more of a relationship with his mom. Basically, its usually her that somehow gets me to come over and when im there, she just gives me so much attention like she'll sit next to me and stuff and when hes not around shell get closer like if i have a napkin on my lap and im eating and im spilling something she will sort of like... impulsively reach over and wipe it off but taking a good amount of time to you know kinda.. i dunno and i ended up getting a hard on but its just that im a virgin she had him when she was 21 then the husband ran off i heard and she raised him all by her self and i dunno it seems as though shes straight up coming onto me..... like when i see her she gives me a hug but its not just like a casual hug its like a breast pressed to my chest boner raging sometimes pressed up against her vag... and i dunno i really have never had sex before and im not that big or anyhting but i wanna fuck her so bad ithink about her and jack offf to her soooooo much i dont know what to do.. is this normal... it cant be...