A Starfleet lieutenant aboard Voyager whom Seven of Nine selects from the crew manifest as a suitable candidate for her first date in the episode Someone to Watch Over Me.
Lieutenant William Chapman appears in Someone to Watch Over Me. When the Doctor begins coaching Seven of Nine in romance, she chooses a partner by reviewing the crew's records and decides that Chapman meets her criteria.
She invites him abruptly, and the nervous lieutenant accepts. Their evening in the holodeck restaurant goes badly from the start, with Seven dismantling a lobster with surgical efficiency while conversation falters.
When they try to dance, Seven's strength gets the better of her and she tears a ligament in his shoulder. Chapman ends the date in sickbay, and Seven concludes that there is no compatible mate for her aboard.