I dont think Ash did not like that kiss, i mean if a cute girl kiss you suddenly ofc you will have same reaction as Ash right now xD
now my opinion about this..
well im really happy that the writers did it for us, Serena is different from other pokegirl.. she's only one who did this to Ash! even saying Ash is her goal!
now someone mention this on twitter but, they rather want to keep the kiss later on cause it means Amourshipping ended there means theres no reason for her to return in future series and kinda akward for her to see Ash again after kissing him... that because of this scene, the chances for return of Serena in future is really low now
but if they did not do that, its more higher chance that she might go to Alola and confess there instead giving a kiss here
now my opinion about this..
well im really happy that the writers did it for us, Serena is different from other pokegirl.. she's only one who did this to Ash! even saying Ash is her goal!
now someone mention this on twitter but, they rather want to keep the kiss later on cause it means Amourshipping ended there means theres no reason for her to return in future series and kinda akward for her to see Ash again after kissing him... that because of this scene, the chances for return of Serena in future is really low now
but if they did not do that, its more higher chance that she might go to Alola and confess there instead giving a kiss here