confirmed to ET on Monday that Ariana Grande and husband Dalton Gomez have separated after two years of marriage, new details are emerging about what led to the couple's split.A source tells ET, «Ariana and Dalton tried to make things work, but ultimately they were just not a good fit. Dalton has been very private and low-key about their relationship with his work colleagues and hasn’t been talking a lot about their split.»Another source notes, «Ariana and Dalton’s friends have always been concerned by their whirlwind romance and felt their relationship would ultimately be short-lived. Their relationship has been rocky at different points, and they've had trouble making time for each other with scheduling issues.»A third source also notes the toll that the couple's work schedules took on the relationship, saying, «Ariana and Dalton have had issues for a while and tried working through them but couldn’t.