can marital sex be complete with oral sex (fellatio) ?

Answer 1

Fellatio describes the oral stimulation of the penis. A common technique of fellatio is to take the glans of the erect penis in the mouth while rhythmically caressing the rest of the penis with the hands; the testes and the shaft of the penis can also be licked with the tongue. Suction is often used to increase the pressure and friction exerted on the penis.
Fellatio with mouth stimulation of the glans.

Depending on the preference of the participants, this stimulation may produce an orgasm and ejaculation of semen. If the semen is accepted into the mouth it may or may not be swallowed (hence the slang phrase, spit or swallow). Sexual arousal of the penis will often produce a small quantity of pre-ejaculatory fluid from the urethra at the tip of the penis prior to ejaculation. This fluid is produced by the Cowper's glands and is not semen, although it may contain traces of sperm.

While the use of the mouth to stimulate the penis, especially the glans, is a central feature of fellatio, often the partner simultaneously stimulates the shaft of the penis with his/her hand to provide the man with the feeling of the penis being enclosed. Some authorities (such as Franklin, The Ultimate Kiss, p. 62) recommend this as the preferred and most satisfying method of providing oral sex to a man. Another very efficient technique is to have the penis's head go in and out of the mouth very quickly (without going down to the shaft). This gives the receiver extreme stimulation and can lead to ejaculation in less than a minute.

Some males regard receiving oral sex as an ego boost, believing that such an act is a form of dominance over their sexual partner. [2]

One form of fellatio is known as deep throating, after the 1972 pornographic film Deep Throat. This technique involves repressing the gag reflex and taking the entire erect penis in the mouth, the shaft bending slightly to allow the head of the penis to slide partially down the throat of the fellator/fellatrix.

Answer 2

I dint think so since it should be made to have babies and you can't this way!!! You should ask a priest from your religion to be sure, if you dare!

Any SO (significant other) will consider that you've cheated them though if you have oral sex with someone else.

Answer 3

If I understand you question Yes it can.