<p>If you need to take another class for your major with an instructor that you already had, but you knew that this instructor had a crush on you in a past (1+ years ago; 5 yrs older), would you take their class or pick another section with someone you don't know?</p>
<p>As long as they’re not behaving inappropriately (trying to get you to come to his office hours to spend time alone with them, sending you flirty emails/texts, etc), then I wouldn’t see a problem with it.</p>