I have a ton of things *I* am jealous of, but I just whine to myself and move on.
T gets jealous often and when he does we know we need to re-work things around here as it's always for the same reason: Hubby or I spending more time with C & B, and not enough with T.
I seem to forget (more often than I care to admit..) that during the week while T is at school I do things with the other two. But when T gets home, other than homework, dinner table discussions, and story time (with all 3) is just not enough for him. So I try to do an activity with just him, or him and C, while the hubs cooks dinner with B.. Of course I slack a bit, then when I notice T acting out again I start doing it again..