What to write
What to write in a birthday card for your cousin
A cousin is the childhood co-conspirator — a birthday card can lean on all that shared history.
Quick answer
Happy birthday, cousin! From garden campouts to group chats — glad it's been you the whole way.
Birthday messages for your cousin
Wishing my favourite cousin the best birthday. Family by chance, friends by choice.
Happy birthday! No one else shares the childhood evidence we do. Have a great one.
To my cousin and lifelong teammate: have the best day. We're overdue a proper catch-up.
Happy birthday, cuz! Grateful for every holiday we spent scheming together. More of that this year.
Have a brilliant birthday — the family reunion's honestly just an excuse to see you.
Make it your own
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Questions
What do you write in a birthday card for your cousin?
A cousin is the childhood co-conspirator — a birthday card can lean on all that shared history. The strongest messages name one specific, true thing about them and say plainly how you feel — keep it short and it lands harder.
How long should a birthday message be?
One to three sentences is plenty. A short, specific line beats a long, generic paragraph — people remember the detail, not the word count.
Found the words?
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