At the moment, no.
I'm not a virgin, but I ain't had it in a year (at least) due to being in a very, cery bad relationship (was a fantastic relationship for the first year, then in the second we went to the same uni...I became an alcoholic to deal with the stress from my -now-ex (though obviously I had some part in the blame, and she wasn't exactly "psycho ex girfriend" material, we were totally uncompatible personalities - she was a very reserved, "socially alternating", nerdy girl; I am a friend-craving slightly-goth guy - didn't help matters my best mate was a lovely goth girl, and my -now-ex thought that we had a thing going [we didn't, much to my dismay towards the end of the relationship]).
In a relationship, I feel it's very important - it's one of the things my ex split up with me for, because I no longer wanted to sleep with her (our arguments, and differences in personality, and my alcoholism/depression meant I had very low self esteem). Doesn't help that I also thought she was cheating on me with at least 2 other guys - but maybe that was my paranoia talking. Turns out she's now dating one of them and living with the other. Anyway, where was I....yes, the sex is a show of love, it builds trust and intamacy to new levels and, quite honestly, when it's with someone you deeply love it boosts your mood, mental abilities and general health (I never got a single cold when I was having regular sex - now my immune system is a pile of shite - whether it's related or not I don't know).
Right now I'm trying to overcome the damage of depressive alcoholism has done to my system - I'm quite overweight (not obese per-se, the rest of me is fairly muscly, but I do have a rather embarassing belly) and have few friends left (ex kept driving them away). However, once I'm feeling better about the way I look (ie, can fit into my goth outfits again) and I re-start uni in September/October then I imagine sex, specifically relationship-based, will indeed become a big part of my life. At the moment I am more concerned with paying off debts, repairing the damage done to my body and my old friends and getting back into a decent university to start my degree again. When I go to bars, I do so with a group of friends to have a laugh and relax, and tend to ignore other people there. Same with work - I build friendships with my female collegues but I don't see the point/need in taking it further (I'm at work for the money). 'Course, I'm a highly fetishistic and experimental person, so I'm really hoping to push some boundaries and have some fun at uni (my ex was very..boring regarding sexual activities).
I don't know if anyone else finds this, as although I said that sex is very important in a relationship, I don't exaclty miss it - I miss all the other "coupley" stuff that you get up to when in a relationship.
TL

R - too much information on my behalf, didn't vote, sex is great but I'm not concerned I'm not getting it, mortified and doomed to a life of geekdom for posting this on an internet forum (the shame will never leave me, but I'm bored and slightly drunk).