Honestly, I don't really care about that as much as how nice you are. Being a gentleman is better. Being a little strong is okay but I rather care about how nice the person is. Hope this helps by getting your Girl!! :)
defiantly not ! doing that sort of thing can push girls away is totally charm that makes you get a girl be sweet and caring and cute to her and you should have her falling for you in no time avoid trying to show off it just make girls think your up yourself
i dont find it attractive to see a very muscular guy, specially not one wearing tight shirts just to make his muscles more obvious. I like a guy who works on building a good character rather then making body building a priority. In the end it just depends on the type of person YOU want to attract.
every girl is diffrent some like it and find it sexy and attractive others not so much but if and when you come across a girl you really are starting to like then get to know her and if she tells you she likes that then by all means show her