baesick
Extremely emotionally distraught due to feelings of grief and loss at the absence of The One you love. Far beyond 'lovesick'.
"She was gone and he felt ill over her absence. Lovesick. No...worse. Baesick."
Baesick
The feeling of missing ones partner(s) depending on the amount of time they have been away.
Josh was so "baesick" because he hasn't seen his girlfriend in a couple of days.