I don't think you will be able to "convince" yourself that you are straight if you aren't straight. Pretending you are straight may seem to work when Christ is involved, and he certainly may help you feel more straight if it's what he wants, but again, if you are in fact gay, pretending you are straight will only do so much. Is Satan tempting you? Probably. But your attractions to boys and men aren't going anywhere (unless God wants to take them away). So I think it's best to just accept who you are.