Once again, it looks like Taylor Swift got dumped …

Yesterday we reported that Tay and her main man, Scottish DJ Calvin Harris, broke up after 15 months of dating. Of course we’re all wondering why they split (oh and when the song is coming out about it) -- and we've got some fresh deets!

A source close to the couple said nothing dramatic happened, their romance just fizzled out. “[Calvin] started to lose interest over the past few months, but really tried to not just break up,” according to  E! News. “They were just not very compatible in different areas in their relationship.”

We have a feeling that their hectic schedules didn’t help either. The sourced added, “It seemed like they were more friends than lovers.”

The outlet is also reporting that Harris (whose real name is Adam) didn’t cheat or anything like that (which is a good thing for him since T-Swizzle would have definitely written a bad ass song about it!). E!’s source said, “There were no other women involved with Adam. He did not cheat on her at all. Just not a good match.”

Word on the street is also that the blonde got too "clingy" ... umm we have a feeling that's totally true!

Well that’s okay — we love T when she’s all sad and heartbroken ...