Welcome to SR. This is a great place to learn about addiction and how it affects the loved ones of addicts.
Everything is a matter of perspective. You can look at Valentines Day as a lonely and heartbreaking day away from your reunited loved one OR you can view his being in rehab as the best Valentines Day gift he could give to you and himself.
I hope you stick around. Learn. Read. Ask questions. Vent. Participate.
gentle hugs
ke