To good to be true, or just me being paranoid?

lately ive been talking to a girl, i've known her quite a while, like my group of friends used to hang round with her group of friends, anyway she recently got out of a relationship with some guy that she had been with for a year and 3 months, this ended about a month/ 2 months ago, and ive been talking to her ever since pretty much, and basically, i heard through a friend that she liked me, and i liked her anyway, so i just said to her is it true you like me basically, and she said yeah, so weve been talking on the phone and that, and finally i met her for the frist time in quite a while and we got on really well and stuff you know, like went shopping got a coffee and that, and she was sending me signals and stuff, like kept touching me and and that, getting all close to me, telling me things she doesnt tell anyone else and stuff, so im taking that as she trusts me quite a bit. Then that was that we went off and went home, but then, she text me later last night saying to come to her friends house cos there was a few of em there, so me and my friend turned up, and again we was really close there aswell like all snuggling on the sofa and that. But to me yeah, i've got a bad history of relationships you know, like really bad, they come and go with me to be honest and i cant be dealing with all that again, i just want a girlfriend that i can settle down with, but cos its happened to me a lot in the past, i need a lot of reurance, so from what ive said do you think its me just being paranoid or is it maybe just too good to be true like what could i maybe say to her to find out how she feels ?