Seeing as they got into a major squabble about a song Rihanna has lent her vocals to, we'd say she has a right to weigh in on it!

Rihanna reportedly wants Taylor Swift and Calvin Harris to kiss and make up -- and write more tunes together! “Rihanna’s all about the love and would love nothing more than for Taylor and Calvin to bring more music her way,” an insider told Hollywood Life, adding that that RiRi is "not taking sides," rather "she’s staying out of their feud ... [she] hopes that they’ll find common ground to walk on and be friends again."

Rihanna provided the main vocals for Calvin's song, “This Is What You Came For," but earlier this month Taylor confirmed that SHE actually wrote the track for Calvin. The duo agreed that a collaboration would overshadow the track, so Taylor kept the publishing rights and used the pseudonym Nils Sjoberg as her credit, though since she still owns the rights to the song, she could ban Calvin from performing it.

After Taylor confirmed the news and threw a jab his way, Calvin went on a bit of Twitter rant about the whole thing:
    "And she sings on a little bit of it too. Amazing lyric writer and she smashed it as usual. I wrote the music, produced the song, arranged it and cut the vocals though. And initially she wanted it kept secret, hence the pseudonym. Hurtful to me at this point that her and her team would go so far out of their way to try and make ME look bad at this stage though. I figure if you’re happy in your new relationship you should focus on that instead of trying to tear your ex bf down for something to do. I know you’re off tour and you need someone new to try and bury like Katy [Perry] ETC but I’m not that guy, sorry. I won’t allow it. Please focus on the positive aspects of YOUR life because you’ve earned a great one. God bless everyone have a beautiful day."