How do i fix things with him, i really care about him?

First off my friend from work told me she saw him with girls at the beach earlier but she only saw them talking. So I texted him And he hadn't text me all day or replied to my messages. So I got restless and told him "this is the last message I'm sending you. Obviously I'm being used and I don't deserve it I'm a good person" and he replied "omfg the one day I don't have my phone and you freak out. Whatever I don't care." I said I was sorry And that my friend told me something and it hurt me and he called me a gullible person. At work he talked to me a little. Didn't say anything rude. I don't know how to tell him I'm sorry and I didn't mean it. I mean I forgave Him for getting hickies when we first started talking so why can't He forgive me for a moment of weakness? Help!