Much like Sunny, Blue wasted no time romancing his neighbors. However, unlike Sunny, he was genuinely leading them on into thinking they were in an exclusive romantic relationship with him, and then cheating on them behind their backs.
Karma struck and he got fired from his job (lol)
He also ended up being caught by one of his neighbors, Lora Copur, and she swiftly cut things off with him.
That seemed to be fine with Blu, though, because he was actually getting quite serious with Sam Hart. He even asked him to move in with him.
That didn't stop Blu from cheating on him, though.
Poor Sam being non the wiser, he proposed.
The two led a happy domestic life together for a while.
Until (for some reason) Lora decided to take Blu back, despite knowing Blu was engaged to Sam.
This was when Sam finally caught Blu in the act.
Thankfully, Sam had enough self worth to call off their marriage immediately and left his ass.
For reasons beyond me, Lora excepted his proposal and decided to move in with him.
Things seemed to be right in the world for Blu... for now. Given that he's a serial cheater who doesn't know how to be single, I can only imagine the cycle of "Find a New Partner > Cheat On Them > Get Caught > Jump to New Partner" will continue from here... and possibly for the rest of his life.