No sex after 3 months

I’ve been seeing someone for over 3 months. he has slept over twice and couldn’t get hard but he didn’t say anything to explain it. I invited him back the other day and he just ignored the offer and went to his own place. more recently he spent the evening in my area and was supposed to stay over. As we were getting ready for bed he said he felt really ill and ended up leaving. i had been planning on asking him what was wrong if he couldn’t perform a third time, but we haven't got close enough to it happening. I’m at a loss, I’m not sure whether it’s nerves, he has a medical problem or he just isn’t into me. it’s not like we even do other stuff when he hasn’t been able to get it up. We are early 30s. he has made plans for me to meet his friends. I had really felt that he liked me but just wanted to take sex slow. That would have been okay if he had communicated that. he is not communicating with me what the issue is. I’m feeling so rejected and the lack of communication and excuses he is making is starting to put me off him. He also hasn’t offered or tried to do anything else remotely sexual to satisfy me.