Visit Anders

Visit Anders is a companion quest in Dragon Age II's Act 2.

Walkthrough
Talk to Anders at his clinic in Darktown.

For maximum friendship choose the top-right option or romance option every except at the second choice; you will gain an extra +5 for either "How are you handling it?" or "I bet Justice loves it" instead of the romance option "I'll keep you safe". The initial question "Were they after you?" has no effect on friendship earned.

It seems if you've flirted with him previously an extra bit of dialogue will occur, with two flirt options and one rude one. The rude choice appears to earn +20 Rivalry, offset by however many friendship points you'd already earned. Choosing either flirt option, then ending the romance at the next opportunity will avoid the rivalry gain, with a greater friendship boost for "stay in control" than "you're so romantic".

Rewards
Either or  if you are romancing him. if you've previously flirted with him, and choose the rude bonus dialogue.

If you've already halted a romance with Anders, you can earn via the second aggressive option, or  via the third. More rivalry points may be attainable via romance options.