Do you think this is bad?

ok so i'm very nice usually but i decided from now on with guys im just gonna be standoffish and this is why. first there's this one guy i work with and we're cool and he kept insisting on buying me lunch and i kept saying no because i just felt weird going to lunch alone with him(i'm married btw) and so finally i said ok one time (and i told my hubby lol) and then all of a sudden after he started being all stalkerish. calling me, texting me, following me around trying to flirt and i was like nuh hu i so finally he got the hint. so then there's this other guy who works only part time here and im nice i barely talk to him and he started doing the same thing being all stalkerish. all of a sudden i have 2 more guys at work asking me to go to lunch with them! and like they give me weird compliments like "you're like an angel, so beautiful!" just weird crap that isn't professional! and my boss tells me im just too nice so that's why they all have a crush on me and im like ok im nice BUT i def don't flirt ever! btw these guys all have my # because it's required for my job. so i started being bitchy and now they just always stare at me weird like they want to talk but are too scared and like right now some guy came up to me and he's like "dang what's wrong with you? so mad all the time!" but i guess i don't know how else to deal with the situation. help?