As a Muslim you must love, respect and believe jesus and all prophets too.
Failure to love, respect and believe jesus has made you a defector because such act has shown you do not obey the commandment of God..

"The prophet (muhammad) believes in what has been sent to him from his Lord, and (so do) the believers, each one believes in God, His angels, His books and His propgets. (They say,) we make no distinction between one another of His prophets..."
(Quran 2:285)

The beliefs of a Muslim towards ‘Eesa ibn Maryam (Jesus the son of Mary – peace be upon him).

1. Muslims do believe in ‘Eesa as a Prophet, a messenger and a noble slave of Allah sent to the children of Israel to call them to believe in Allah alone and to worship Him alone.

2. ‘Eesa was never a god or the son of God as the Christians claim.

3. We believe that Allaah supported him with miracles that proved he was speaking the truth. Many Prophets before him did miracles. The miracles includes ‘Eesa speaking while he was still in the cradle, breathing in to a clay bird making it turn to a live bird, healing the blind & lepers, quickening the dead, etc. All this happens solely with the permission of Allah.

4. We believe ‘Eesa has no father and his mother Maryam was a virgin. This is similar to Adam who has no father or Mother and Hawa (Eve) who has no mother but was created from Adam (peace be upon them both).

5. We believe that he permitted to the Jews some of the things that had been forbidden to them.

6. We believe that he did not die and his enemies the Jews did not kill him, rather Allaah saved him from them and raised him up to heaven alive.

7. We believe that he told his followers of the coming of our Prophet Muhammad (peace and blessings of Allaah be upon him).

8. We believe that he will come back down at the end of time, and will disprove the claim of his enemies the Jews that they killed him, and will disprove the claim of the Christians that he is God or the son of God, and he will not accept anything from them but Islam.

9. Then he will die and the Muslims will offer the funeral prayer for him and bury him.

These are the beliefs of a Muslim towards ‘Eesa ibn Maryam (peace be upon him) as founded in the Books of Islam.

We ask Allaah to make us steadfast in faith and to cause us to die as believers.
May Allaah send blessings and peace upon our Prophet Muhammad and other Prophets and Messengers of Allah.