20 girls tried to kiss my man...

He went to a party last night, and told me that 20 girls tried to kiss him, and he said to them "I'm sorry, I'm in a relationship" he told me he stayed loyal to me and many guys would have just cheated..
IDEK what's going on with me but I feel so jealous, and angry. Like lately I've been getting jealous or upset with him very easily (but at that time I don't say anything because I don't want to start drama, but it only causes me nothing but pain) I really don't know if it's my depression coming back, or it's just the fact I'm considering becoming single again. He's a really attractive man, and I'm sick of all the women trying to put their hands on him. Any advice?