Jealousy is the worst poison ever in a relationship. Don't think that jealousy has something to do with love and care. Jealousy is about possession and/or being insecure of the love from the other person. Also about having problems with self esteem and identity.
RE: WHAT WILL YOU DO ?
I will leave CS now and I hope you will get your portion of drama here. I wonder if the man you are talking about is on CS.Merry Christmas and namaste!