Does Sexual Arousal go down with experience?

Ive only recently gotten sexually involved with my girlfriend and i find that my sexual arousal is extremely high. For example i usually have an erection just from her rubbing my arm, or doing something even slightly sexual (im not talking about touching me sexually). Will this arousal decrease as i spend more time with her and get used to her. She is my first sexual partner too. In the porn that i have seen when the girl starts giving the guy head or a blowjob he usually isnt even fully hard yet - for me this seems impossible at this point. Is this something that just happens from experience as you get used to sex and sexual encounters?

Thanks

don't worry it will get better, your just horny as hell. lol

agreed itll get better with time

sex is just as good over time as it is when you begin my friend....

It hasn't happened to me and I just turned 40. I get an erection as fast and as hard as I did at 18 and sex it a whole lot better now that I know what I'm doing with it.

I donno im a girl and i dont have a penis but if you think about it. The people in the porn...do you really think they really attracted to that person they are about to have sex with? i believe with erections its pure attraction "porn stars" are usually just coupled with someone to make money as far as i can tell...

If your worried about loosing interest, no need to worry. I have been with the girl I'm with for nearly ten months and I'm still just as easily aroused by her touch as you mentioned. It all comes down to your attraction to her, physical and mental. As far as the porn star thing goes, do you get a stiffy thinking about stocking shelves or whatever it is you do for a living? No. It's not sex to them after a while, it's just work.