Older man issue, am i going paranoid?!

You're not paranoid, you're completely normal! Some people are attracted to older men/women and that does not make them abnormal, no matter what other people say! You found someone you're really attracted to, and seeing someone with the same features will remind you of that person.

Hopefully you will see him again. If you do, do NOT let the chance to talk to him pass you by!

Dude... Figure out who he is, and just walk up to him and say this

"Are you busy?"
if(YES)
{He's a douche}
if(FOR NOW, COULD YOU GIVE ME A MOMENT?)
{Wait for him}
if(NO)
{GOTO ICB}

ICB:
IF(YOUR SHY)
"I was wondering, if a man of your age was interested in younger girls, I'm doing a survey for my PSYC course on universal terms of feminine beauty, and a part of it aside from cultural differences was age difference"
IF(YOUR CONFIDENT)
"I was wondering, if a man of your age was interested in young, nubile, and sexually charged woman. I'm doing a survey for a PSYC course. Which has nothing to do with why I'm talking to you. But really, if I could talk to you and get this out of the way. Why not hit two birds with one stone?"
CONDITIONAL{
You must make eye contact. They say that women communicate well when receiving eye contact. What most people don't pay attention to is that men respond the same way. Without eye contact. It will be awkward, and even if he WANTED you. He would turn you away. You interest, seduce and make romance with your eyes.
}
GOTO REPL

REPL:
IF(YES AND FLIRTY)
{
Joke with him. You've broken the Ice. Be yourself at this point, even if you have to gasp and say "wow, I'm glad that's over" in front of him. Be accepting of his eventual forwardness, and if a moment of silence happens. SAY WHATS ON YOUR MIND NO MATTER HOW CRUDE YOU MIGHT BELIEVE IT TO BE. Blurting out "I can't stand tacos" is better than silence. But wait for TEN seconds of silence before blurting... If you don't give HIM time, you don't let HIM stop the silence.
}
IF(YES NOT FLIRTY)
{
Stay intellectual. Be cool and calm, but eventually let that wane. He's an older man, hopefully he's got stories to tell about himself. Ask for examples like "Have you ever had a relationship with a younger girl? What was that like? Tell me a bit about yourself" and precursor it with "If you're not too busy". Remember, if you wanted him. All you'd have to do is just say "You, me, sex, now". However, it's not just "having" him. It's the conditions of having him, of knowing him, and discovering. Therefore, YOU put him in the mood to talk about himself. Which requires less forwardness. The right question, will unlock his stories. Then he is seducing YOU. If he starts telling a story. That's your excuse to melt in front of him.
}
IF(NO)
{
Same as if he said Yes but wasn't flirty. Stay intellectual, ask questions and be calm. I'm sorry, but if he's a red blooded male. A -part- of him will be attracted to a younger college girl. Even if it's tiny... NOW what you have to do is prove to him that you're not a mindless college girl. That in fact, you are at his level, or a level of intellect and maturity that he's comfortable with. Same laws apply.
}
IF (NO, I'M MARRIED)
{
At this point, you might not be attracted to him. Me on the other hand. I don't like taking no for an answer. At this point you can stay his friend. Gain his trust. This game is much slower than the others. So your chances are 75%, minus if he's married and how much he -actually- loves his wife. If you're interested in being the girl that wants to steal him from his wife, befriend him first. He must first trust you more than his wife. Which... In most cases of American Marriages. Is not that difficult. You would think women are more loyal in a marriage, if that's the case. Then I could say it'll be easier for you to break up a marriage than it would be for me.
}

You have asked this same question in one form or another in a half-dozen YA areas. Any idea how many answers it will take before you find one you like?