I'm a bit disappointed in May here, I thought she would say in a bit cliche way that honest love towards Bernadette without all these lies and cheating is the best feeling she felt/had from some time...
But if now May addiction she digs is telling truth towards everyone and be honest with her feelings...
First she was emotionless kid.
She discovered friendship, and how good the positive connection with another human felt.
So she mimicked that through becoming jester and making more people happy, so through that got more friends.
Then May discovered wonders of sex and sexual freedom and that became her pony - nature, joining with so many people on this more or less primal level in pure fun with only positive feelings in mind had to be the biggest kick.
Then May fallen in love with that guy who left her and then with Bern and her free love towards all interesting people habits became cheating and something she maybe stated to enjoy less and less till Crest shout her that in the face.
And then May discovered wonders of being honest through the spell which turned into what we see in current pages...
If indeed May would do it with Lucient at some point then for sure I would like her even less, if that was the hidden truth here.
That would be the blow, maybe it was Lucient who became less interested in Regina cause he fallen for May?
I'm betting that May simply will tell Regina she feels attracted to her, and maybe even loves her.
Now the question here is how Regina will respond, maybe that she knew all the time and it was the reason she left Lucient having May in her mind wanting to confirm things?
We saw Bern had her temptation phase with Polly where her first true love was indeed mutual.
Question is what May will do if her love/attraction/crush towards Regina would be at similiar level for both parties.