We havn't seen may and ash togeher yet but i think misty is better for him.
I found a list fo examples that show that misty likes ash and vise versa i found it @
https://goldenrodtown.tk/
1) When Daisy asks if Ash is Misty's boyfriend, Misty blushes.
2) When Ash was going to fight the students from Pok?mon Tech, Misty said. " Show them your a man, Ash!" (Misty: or show them you're 'MY' man)
3) When Rudy from the Gym in the Orange Islands asked Misty to stay with him, Misty says no and picks to stay with Ash.
4) In the show called Where Fore Art Thou Pok?mon, Ash asks Misty if people change when they get kissed. Then Misty replies "Guess we'll have to find out for our selves..."
5) In The Heart Break of Brock Misty says to Ash, "You and I will be married someday too..."
6) When Ash comes back from being a ghost, you see Misty whip away her tears and blush.7) In Pok? Ball Peril, when Team Rocket teases Ash and Misty, they BOTH BLUSH!!!
8) When Melody kisses Ash, you can tell Misty gets real jealous.
9) When Melody touches Ash's arm, Misty gets jealous even over that.
10) When Ash dies in the first movie, you can hear Misty say "Please... No", but you don't hear Brock say anything.
11) Misty's Song, really you should listen to it ^_^ (Misty says "I love you..." at the end!)
12) In Under the Mistletoe (song, I believe), Misty is talking all about that she wants to meet Ash under the mistletoe or should I say sings.
13) In the song Pok?mon Christmas Bash (song), Misty says she wants to dance with Ash!
14) When Ash loses at the Pok?mon league, you can tell Misty is a little sad, by the look on her face.
15) When Nurse Joy said Pikachu was cute, Misty thought she was talking about Ash, and then Misty looked at Ash and blushed.
16) In one of the new Todd shows, when Ash and Brock fall into a hole, Misty goes our to Ash only and puts her hand on his shoulder, and doesn't even ask Brock if he's okay!!
17) In Pok?mon Movie 2000, Misty goes swimming out in a frozen ocean to save Ash. She could've just used Starmie or something, but she threw herself in to save him instead
18) When Brock decided to stay with Prof. Ivy, Tracey wanted to follow Ash and Misty so he can meet Prof. Oak. But Misty declares, "HEY! You can't just invite yourself in!", in other words, "You can't just disturb me and Ash's life together!"
19) In Wherefore Art Thou Pok?mon? Misty says that Emily and Ralph are too immature to know they like each other. Then Tracey goes "So, that's kinda like you and Ash right?"