Two Souls of Lost Lovers

The characters are best friends with each other. They got their friend groups to hang out with. Memories or visions pops into their head, as in these flashes are two people who look identically to them. Showing our main characters, romance of the people in the visions. These people were lovers in the past. But, one of our main characters was already seeing someone else but the other believes they're was destined to be lovers.