Good guy or Bad Guy

So theres this guy I've been with him since i was 13 i am now 19 we have been together for 6 years i am now falling for this another guy who is so sweet and broke up with my 6-year relationship because he was mean to me and cheated on me and now he claims to change and says he will never hurt me again and crys over me but this new guy is so humble and I might be falling for him what should i do??