DESPERATE HOUSEWIVES - "Is This What You Call Love?" - Susan is in for a shock when daughter Julie pays a visit and shows up six months pregnant; Bree's alcohol consumption and lust for men continues to dominate and ruin her life; Lynette's first sexual encounter since separating from Tom doesn't quite end in fireworks; and Gaby's attempt to sooth Juanita when she doesn't receive a Valentine's Day card from a boy she has a crush on backfires, on "Desperate Housewives," SUNDAY, FEBRUARY 12 (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/DANNY FELD) TERI HATCHER, ANDREA BOWEN, CHRISTOPHER GOODMAN, STEPHANIE ERB