Guy's Behavior

Should I just forget him and move on?

There is a guy at work I developed feelings for him, and I love him by my side I really feel in love with him. But here's the problem, im unsure if he likes me like i like him or he only see me as sex object. There were moments were he was really sweet and caring when i didn't feel well he share my feelings with me or one time when we were going down the stairs together he said its slippery i hope i don't fall in your hands. But he talks a lot about sex too or hints at it when talking to me like when he making a joke or when he having a call at work he seems to tell the people he having call with his fantasizition like what he would do with me sexually. Because even last time a guy came and said to him and me about me finally on my knees for him. Or that time he offered a massage but I refused. And last Friday i heard he was having a call with male worker like he said fuck? And was laughing then saying how he would love to have sex right now but dont know with whom just heard he said he would do it now without thinking twice. And last thing i want say which hurt me he goes hot and cold a lot on me first he is all loving with me pays me a lot of attention the other times like im not there and just ignores me last week from Monday to wednessday he was very loving with me then Friday got cold or that time when i came back from vacation 2 weeks we wouldn't talk or he wouldn't even bother look at me but i noticed it upset him too when we were not talking to each other 2 weeks that time

Should I just forget him and move on?
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