Most Helpful Guy
Those people that tell you to just lose contact don't know what they are talking about. If they think that's ok then they are heartless, mindless people with little compassion who shouldn't even be friends in the first place.
Thank you for at least caring about your boyfriend. Just tell him the truth and make sure he knows that you care for him and keep contact with him still (a lot) cause he'll know that you still care for him and even if not at first he'll be heart broken and angry, he'll soon come to appreciate that fact you care for him cause he'll realise you could of done worse.
Most Helpful Girl
Don't lose all contact with no explanation. I was in a relationship like this. We got along so well at first. But then little things started changing. He thought everything was fine, but it was me that was unhappy. Eventually, I had to face the facts. I told him the truth. He tried to make me change my mind. He tried to convince me that it would work. But don't back down. If your gut is saying "this is wrong... I'm unhappy", then stay true to that. Don't let him change your mind. Things will only get worse. Yes, you love him... but sometimes it is best to let someone we love go before things get much worse