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Pelphrey also posted a tribute to mark the anniversary.

\"Happy One Year bud,\" he wrote alongside two photos of the couple and one with their daughter. \"Best year ever. Love you more each day. ♥️🤍🐣🐣@kaleycuoco\"

The couple welcomed Matilda, their first child together, on March 30 after announcing they were expecting in October.

Cuoco was previously married to equestrian Karl Cook and tennis pro Ryan Sweeting.

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