Jealousness

He went out with a friend for a drink while a friend of mine paid me a visit. Now my friend has left while he’s still out. I shouldn’t be jealous but I can’t control it. I don’t want to show it to him but I can’t always hide it. My friends tell me that this uncertainty feeds me and keeps my relationship alive, but I don’t quite agree. I think I would prefer someone quieter than him to stay at home waiting for me and not make me think of what he could be doing out there. I also forget my good manners when socially, I only care and focus on him and I don’t behave to his friends, for example, as I should, I’m losing myself…