SUBREDDIT: r/relationships
TITLE: Me [20 M] with my close-friend [21 M] of two years, I feel like I've been ripped off. How irrational am I being?
POST: Hello Reddit,

I'm having an issue with my friend, Imajerk, right now, and we both would like the internet's opinion on the matter. Background, we have been great friends throughout uni, because we are in the same major and this will end up being nothing more than a bump in our relationship. 

A few weeks back, I bought a TV from a friend. Before buying this TV, I spent a bit of time on the internet researching, looking through slick deals, newegg, and amazon. My roommate and I were originally going to buy another TV, but when I consulted
Imajerk about it, he told me I would be getting a bad deal. The TV was a 40" 1080p LED tv for $250. Imajerk said the specs were bad, because it had an input lag of 8.5ms. Cool, that's fine. I guess I'll look for alternatives. At this point, he offers to sell his TV.

His TV was a 40" Toshiba 1080 with better input response, more HDMI ports, for the cost of $300. He told me he originally bought it for $400 and it he will not budge for lower than $300. I waited and thought about it for a week, and I decided I would go with the deal. My thinking was that this didn't seem like too bad of a deal, and my friend wouldn't go through with ripping me off if it was. After talking with another friend, he found comparable TV prices for $150-$250. The $250 was also considered a bad deal.

I understand that I didn't do enough research, and I should have realized this was a bad deal. I'm still learning how to be a consumer and such. My question is if Imajerk did a dick move. We are still good friends, I just want to prove he's a jerk.
TL;DR: In hetero relationship, boyfriend needs to know I'm bisexual and would hate to lose him because of it. I'm bisexual and who will ruin his coddle? Who should I finally tell?
TL;DR: I'm bisexual, I'm in a hetero relationship; Is it something he needs to know? Is it really relevant in a hetero relationship regardless if one of the participants in the relationship is bisexual?