Crush getting jealous, why?

i proposed my crush he rejected my marriag proposal then i started dating his friend he was ok with us dating but when he came to know we are getting married he got shocked and depressed and trying to pursue me for sex/date...do u think he will propose me for marriage or can this be called love??

Why would you care you are dating his friend now bouncing back and forth from each friend will eventually come back and bit you in the butt. Why would you care if he is pursue you for sex/date. What does the other guy mean to you?