Oh wow! Normally I have... let's call it an issue with jealousy; feels like everyone around me is insanely jealous and expects me and my fiance to be the same way, which leads to an unending stream of women and men saying sorry to me or him because they talked to - or, oh my, hugged!!! - the respective partner... and we are like What the fuck?, cause really, we can trust each other. Anyway, where was I... yes, there. This kind of jealousy that you describe here is terribly fitting. Severus lost everything that was ever dear to him, and I can totally see him thinking it will happen again. And Harry talking about his funny new friend like that and being all secretive would definitely make Severus wary. And I LOVE how Severus decides to fight for Harry's love and just bugger his inhibitions and tell Harry how he feels, damn it! <3 <3 <3 All in all, this is a lovely story that made me feel really good, so thank you!:-*