Tā shì hǎiwáng, shǒujī lǐ yǒu jǐshí gè liáotiān duìxiàng.
He's a player - he has dozens of people he's chatting with on his phone.
Tips
culture
海王 (sea king/Neptune) is a metaphor: the 'king of the sea' has countless 'fish' (romantic interests) in their ocean. Related slang: 养鱼 (raising fish = stringing along multiple love interests), 鱼塘 (fish pond = one's collection of romantic prospects).
memory
Picture Aquaman/Neptune ruling over an ocean full of fish - each fish is a different person they're leading on romantically.
