I've been chatting to one of the other studio tenants I'm friends with (and who works in the same field as XH and the same field that I occasionally wok in as well).
Anyway, he was in a relationship for 2 years, and about 4 months ago his boyfriend split up with him.
They're both very young (early 20s) and from what I'm hearing, the ex boyfriend sounds like he was particularly immature and unaware of other people's feelings.
Today I learnt that the ex boyfriend had split up with the words 'ILYBINILWY'.