What should i do? PLEASE guide me..?

I broke up with this person. I love him a lot. However, he gave me up just because we argued a lot. We often argued about minor things and he gets angry about it easily. Once, just because i couldn't hang out with him as i promised because something imp came up, he angry me for almost 1 month. Then we broke up and he be with another girl. He changed partner twice for just few months. Until then, he broke up with the recent one and came to me to apologize. He said he was too sensitive and sorry about everything and willing to change. Should I give him a chance to prove himself? or should i just let things be.. :(