If the ex-boyfriend ignores him, he will still send you a text message. Does this mean that he still likes me or on purpose?

That man is not so good. Don't be fooled by boys. You may have imagined him well and deceived yourself. If he really wanted to be nice to you, he wouldn't be so vague about your relationship. Make a good decision. He doesn't like you, and he doesn't mean it to you. You should be tougher. He won't get anywhere with you. You'll be better off without him. Leave him now, and one day you will forget all about her.