Well no,because he pretended to like Tak and Jhonen Vasquez wrote "Invaders need no one" to Zeigen that Zim doesn't like nobody oder needs anybody for a friend.And what Zim meant that he'll Liebe minnimoose as a special sidekick.
No one really but in the V-day specail he pretended to like Tak. The Zeigen is'nt really about crushes and stuff,one of the reasons I Liebe Invader Zim so much. :/
No he does not. Irkens are not capable of love. In the unaired episode "Nubs of Doom", Zim tells Minimoose that if he was "capable of love" he might actually Liebe him [Minimoose]. So no, Zim needs NO ONE!!! >=D