As a woman, I honest to God dont mind the first type of guy. Yeah, feelings cant be helped and its normal to develope feelings for someone you interact with on a daily basis and have common interests...

Like you bonded with Martha aka Matty over Dungeons & Dragons, and find her really cute? Normal. Not creepy at all.

Which gamer bro doesnt want a fellow gaming nerd who can compete with him on Overwatch and also cuddle and kiss him?

You met Emily at a slam poetry club and you two bonded over your love for poetry and now you wanna see if she likes you too? Go ahead dude.

But you are Bobby from Botany, having a crush on Liz from Statistics, dont have the guts to ask her out, but have weaseled your way into her friend group?

Yes, many of us regard the third guy with various degrees of contempt if not hate.

You share nothing in common, she has never known you, but one fine day you inserted yourself in her life, as a friend and you are hoping she is bowled over by this farcical friendship and falls into your arms and bed.

And she's a bitch if she sees you as a friend? Make it make sense.

In what world will Liz not find that alarming? Your no friend. At best your a coward. At worst, your a creep.

Lying to get into someone's pants or get resources is despicable.