It may be very useful to you to find out what is triggering your feelings of jealousy, so that those root causes can be addressed.. For instance, if insecurity is the underlying cause, you and your others could work on ways to help you feel secure, safe and supported in your relationships, which should reduce the jealousy.
A question about this please!
What I'm noticing is I don't doubt B's love for me. I'm very clear that he loves me. I'm sure insecurity is an important aspect of it. Almost feel 'lesser' cos I don't fall in love with others myself. I actually suspect there's envy in there for me - i.e. I find it a bit unbearable to think of him loving someone else, when I'm not interested in that - I wanna have some of that for myself (except that I dont). I also seem to be attached to the exclusivity of our love. Don't like the feeling of that leaching out to anyone else. Have the same feeling about sex - it's a sacred union - it's exclusive which is what for me makes it sacred.... (luckily he's not challenging me on that one - seems mono himself when it comes to sex)
Any suggestions for how I get to a deeper understanding of the issues around my jealousy, and how I get support from him/them in that?