@wishicouldbeyou
Hi--yeah, I've experienced jealousy before. I've noticed for me, it's like a fear that I'm going to be abandoned/lost/forgotten or not receive the care/love I'm hoping for if the person I'm connected with gets distracted or attracted by somebody else.
Usually the way I try to deal with that is by expressing what my needs/wants are and trying to reach a mutual agreement on expectations so that both my needs and the other person's needs can be met. Like, maybe I want to talk every day but the other person doesn't want to talk as often, so we discuss it and are able to agree on talking 2-3x/week.