I feel like Pran is the top and Pat is the bottom, though this may not seem natural because of how Pat is an extreme extrovert (extroverts are typically labelled as the tops) but we've seen how "aggressive" Pran can get when they shared physical affection. Be it the kiss at the beach, or the epilogue, we see how Pran is the top. This is just my take on it.
This is just my take on it.