I'm starting to grow really irate with some male coworkers

And I am getting bad at hiding it ,nor do I care to hide it much. Basically I know of a few coworkers that had a romantic interest in me ,some were more polite at expressing it and basically respected my boundaries when I didn't reciprocate. Others grew resentful and even more persistent ,these I have a lot of problems with. One particularly ,who regularly schedules outings and privately messages me about joining , complained to me after I didn't reply or open his message , and 'threatened' to never privately message me again to which I responded positively to ,because I do not wish for him to privately message me ,especially when we can conversate any issues at work or at the work group chat. He however did end up messaging me privately again about an outing ,and I declined ,and once more he threw a temper tantrum. Now that exact same scenario happened with another coworker too ,who however instead of throwing a temper tantrum kept insisting on trying to persuade me to come out ,or would aggressively hit on me at work . Yesterday night ,the toddler man ,seemingly over his latest tantrum , came in after my shift while I was sitting in the main office waiting for my Uber , and seeing I was on my phone/tired/txting etc proceeded to start infantilising me , asking me if I am ok ,persisting to know what is up even though I replied that I was fine , asking me if I'm hungry /thirsty /asking how I would get home tonight etc and then again growing resentful at me for being short in my answers and trying to once again set boundaries . I honestly can say that working with men in my age range +10 yrs has almost always been unpleasant for that very reason , and they are often members of the company that have been there longer /have more experience /hold a 'higher' corporate position (usually managerial), whereas the females notice that behaviour and try to protect each other and/or offer an outlet .

Onestarlitnight

Trying to set boundaries at the outset is great but once it becomes clear that you’re not having any success it becomes time to get forceful and state clearly and in so many words that you don’t want these guy messaging you again privately and that all communication should be professional because you’re co workers and that is ALL you will ever be to them and if they continue to bother you outside of work you will consider it sexual harassment and take appropriate action.
Record that conversation on your phone when you have it.

PepsiColaP

@Onestarlitnight that's all fine and great in theory but in reality most of them are either the HR or friends with HR or more familiar with them than me. I do keep all messages sent to me , a lot of the confrontation happens in person though. For example he messaged me about that outing ,along the lines of 'you are coming out on that date and that place etc.' at a time I was on holiday leave as well (I was in fact in bed with my bf when I got that msg and showed him the brief from my drop down home screen ,but he sees how they are inappropriate anyway) , and I ignored it for smth like ten days before he confronted me in person ,at work , and then messaged me again a few days later casually,as If the confrontation hadn't happened.