SUBREDDIT: r/relationships
TITLE: I [25M] need casual dating tips... bad.
POST: Just got out of a 6 year relationship in which I was badly hurt. She had cheated on me multiple times, and told me she was unhappy... I had no freaking clue.

Having always been a "relationship guy," I always felt comfortable just being with someone, since I was 16. I have a very guilty conscience and have a difficult time thinking about hurting someone else's feelings...

With that being said, I am now getting back out there and trying to date new people. I have this **BAD** problem with getting attached very easily... and am trying to shake it, as I really feel I dont want a serious relationship yet. After going on a few dates with one girl, I'm coming to the conclusion that we do not have enough in common to continue the relationship.

I guess I just want to hear some rules to live by, from experienced casual daters...

How do I NOT get so easily attached to people?

Is it a bad idea to talk to ... let's say 3-4 girls at once?

What's the best way to tell a girl you have been seeing that you don't want to continue seeing her?
TL;DR: 
Awkward dude, fresh out of 6 year relationship. Looking for some tips from experienced casual daters. THANKS!