Memories or Future

What should i do?

I can't make this decision...i want to be happy...i need to decide.

I've gotta choose between a person from my past that has all the memories and a person that i haven't known for very long.

Should i stay with the person that i've got a past with or keep falling for the person that makes me laugh all of the time.
Every time i see him i can feel myself falling further for him and it's driving me crazy.

Should i keep the memories ive got or make new ones with someone else???