i know you hav to go to his sister in pallet town , but when i tried to groom my feraligatr a second time, she just kept sayin "i always hav tea around this time. come join me."
Based from that message she gives, it sounds like you have one of two issues:
You have to have all the massages be given to a single Pokemon and then, after it has full happiness, you have to have it in the front of your party when you talk to her in order to get Blue's number.
You need to get your Pokemon massaged by Daisy, Blue's sister, 7 times before you can exchange numbers with Blue. You can massage them one a day between 3pm - 4pm.
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