A very fun game. I was practically screaming that two aliens were going too far apart while I was trying to keep them alive. I think it's creative to use the connection theme to make a game where both characters will automatically die if one is gone.
One minor critique is UI layers. I noticed the mouse would be behind text or UI elements but it doesn't hinder the gameplay. Also, a timer would be nice but I saw in a comment you had no time so no worries there.
Conclusion: Love is strong and your game was great!