Is this thing called love ?

Ok so I live in a neighborhood wtih my mom and dad . We have a neihgbor who is married ( his wife is a ***** excuse for saying this) with two children. Hes always constalty flirting with me. Asking me who Ilike . Who im gonna marry and just saying how beautiful i am and just flirting with me . One time i was over there and his wife wasnt home . He was asking me who i want to marry when im older .Or one he sai you look beautiful ( then i said thankyou then he said his name paula for example) Paul your looking good oyur self . acting like i would say it back . He always is driving by my house and watching me walk by . Is he obsessed with me ?