Jealousy

Is it bad that I get so jealous seeing you holding hands with another person. I get nervous everytime another person comes up to you and flirts. Why do you make me feel this way? I should not be getting jealous becasue you are not mine. Yet I still always have you on my mind and the feeling your touch lingers on my skin. I cant seem to help it when I see you with someone else. Is it so bad that I get jealous. Makes me wonder, do you get jealous to?