should i hav relationship wid guy whos gal n kids av left So confused

Ive fallen deeply for a guy of 23,hes asked me out on many dates before but i have refused,for many reasons that im 17 so theres tyhe 6 year age gap for a start,he also has to children at at the time was living with his girlfriend,Recenytly tthings have changed he has has problems with his gf for some time now and she has now moved out with the kids and has left him,I think me and this guy have fallen for each other in a big way,it wasnt love at first sight becausewhen i first met him at work which was last august i hated him with passion and found him really creepy,but as times gone by ive got to know him and he has a lovely personality,very loving and caring towards me,always paying mre alot of attention and being nice,I now know that his feeling towarss me are for realk he has been chasing me for ages and talks about me to other people sdaying how much he likes me,hes layed it down on the libne,that he wants me alll to himself and that i can have him now that hes is not tied to his girlfriend,the thing is im still reluctant to go out with him so sooon after his gal has walked ouyt on him even though things were bad between them,i really donyt know what to do i cant leave thing guy stringing i have to make my mind up but i dont really know what i want im so confused,weve got to know each other for some ime,i j8usat dont know if if i shud get involved with someone who has already got a family,they say you cnat choose who you fall in love with,he makes me happy,he always puts a smaile on my face,i feel loved and secure when im around him,i dunno what to do hes been chasing me for ages should i go with my herat and be with,or my head which says going with this guy could cause many problems, Tweet