I have tattoos & like them. I'm wanting another one on my toe. I liked the cross, you showed a picture of on YT, is that the one you got. I'm not sure my hubby is thrilled about the thought of me getting another on my toe, but it's my body & if i want it so be it. I would just tell him that it makes you happy to express yourself in this way. Maybe mention that there are things that make him happy that you don't particularly care for, but you love hm & want him to be happy. I'd give it time, the shock may wear off. He just may be upset that he wasn't consulted about it before it happened. Since it's descreet & adorable I don't see what the big deal is.
P.S. I'm sending your shirt out today.