There's DLC that will unlock the locked DLC Moments on the Moment Select Screen in Steps 1, 2, and 3. So that's three of six the DLCs. Then there are two DLCs that give you the option to pursue a shorter romance story with someone other than Cove, Derek or Baxter. The final DLC is a special wedding themed DLC for Cove. It takes place after Step 4 and is all about planning/enjoying your special day with him.
Haha, we'll do our best!