Toxic? Worth it?

This guy ( I was “talking” to for almost a year.) moved down here from another state for a better job & we work together. but his ex (5 year relationship) has her parents here .. & he was living with them at first until he got settled in & into his own place. He says they’re not together. I had a feeling they were still in contact & even hanging out after seeing/hearing things for myself.. as far as seeing her socks, a dress, beach sandals, pads, small purse etc. at his place. I decided to call it quits right before we hit that year mark.. I was just fed up.. i found out later that, a couple months into us “talking” he took the hoe at our job out to a 5 star restaurant.. he admitted he was just trying to get his dick wet.. he claimed it was before we started “talking” which was clearly a bad excuse, what an embarrassment. Also, he admitted recently to just wanting to get his dick wet with me too at first but, he mentioned how he allegedly gained feelings for me... So, people at work talk poorly about him to me sadly..

So now he sees that I’m definitely not giving him the chance.. & out of the ordinary he bought me one pair of shoes, roses.. he’s been begging me to hang out, has been talking to me about how much of a person I am & has been bringing up marriage & kids. he has been walking me to my car after work, trying to get me to give in... idk what to do. I’m not in love with him. I developed a sense of hate for him & I even told him.... FYI: we still associate at work. & he hasn’t stopped throwing himself at me there...

I don’t know what to believe from him. One of our close friends said “maybe were meant to be” ugh