I really want to be friends with my ex?

we broke up about a month ago, and we broke up because we were better friends than lovers.... we both kinda lost that spark that we used to have, so we decided to call it quits on the relationship, but we wanted to be friends after a little space. i really am over him as a BF, but i want to rekindle our friendship so badly, because he truly was one of my best friends. i was thinking of texting him to grab lunch or something.... should i?