WTF indeed. He sounds like someone who is having a breakdown. My H often plays CDs of love songs; it's very weird to have lyrics like "Let's fall in love, why don't we fall in love" playing in the background as we prepare to separate.
It's that kind of stuff-your H's text, mine playing those songs--that makes the MLC-as-mental-illness theory seem valid indeed.
Me/X-H: 47/48 T 19 yrs M 16 years D14 D10 ILYBINILWY: 10/07 H moved out 6/08