I had the same problem i thought it was full but actually wasn't. You also need to have those libido "splash/splatter thingy" above them for it to work. What i did was go into Dana's room when Chloe is there. Choose "Call Chloe to my room" -> skip time -> go to your room -> talk to Chloe -> Play kissing until she generates some libido -> spitting in mouth until libido -> stop -> Play sex -> remove top until "Grope her breasts" appears -> Lick tits until libido progresses -> Skirt until bed scene -> Grind cock against pussy -> Grind faster until libido -> make chloe rub herself -> and then i went back to the blowjob and came in her mouth. Then you just wait 2 days until chloe is there again and she should already have some libido so when you do the things that generates libido she should truly be maxxed out for it to work to trigger "Make chloe rub faster" and "Have sex".
But I did it all 10 times in a row, Also I'm stuck at Dana likeable heart to ❤️ ❤️ ❤️ to 3 instead of max. I do wait 2 days but the libido resets to zero. I did everything to increase it by teasing, playing board games losing(cheat) and Chloe suck me then fuck her thighs slower to faster. All I did was stuck to "I need to increase Chloe's arousal in. "Have sex" after calling her to my room. It did increased to max but there is no splash on the max level. By the way the game is really downloaded on the official website here on itch.io but why I can't solve this issue. Please give me steps on how to do it. Or it is a bug that has not yet been fixed.