Answer:
Improve
Some clear signs that your boyfriend is cheating, is when he starts changing; like coming home late, or not telling the truth about minor stuff. When he is getting messages on his phone, or if he deletes incoming and outgoing calls. If you try to reach him and he doesn't answer, or if he goes out but doesn't want you there, or if he is dishonest about where he was and who he was hanging out with. If he loves you, there is no reason not to be truthful.