I think because their love kinda fake (and I mean LOVE as strong feeling and not just randomly drop word). They was young and start having fun together. dopamin hit, all that candy-bouquet period.
Maya's dad was against them but they feel he wrong. while I think in reality it is kinda teenager bs to prove adults wrong. Remember they both was ready to jump on mc while they think they "in love" to each other.
Then when Josy come to study there too they start spend a lot of time together, and they find out it is not so easy. Little fights happened here and there. And now when Maya problem with dad "solve" they left one on one with themselfs and maybe just realise this is not LOVE after all (even if they try convince themselfs it is love).
or I'm just wrong and they best pair in universe