No question is too basic for a learning forum!
You are on the right track with your choice of significators. It's the aspects where the reading gets a little glued up.
some of the horary pages I read on the net says even if two planets didn't have a 120 degree aspect, they could still be in trine if they are in the same element houses.
Well, yes. However, the issue in ANY horary chart is: is the aspect applying
? This is the fundamental issue, and will give you the answer.
In the case of Venus and Mars, yes, they are in trine by element, but Venus at the time of your question was stationed retrograde, about to 'go backwards' through the sky. This retrograde takes Venus out of Virgo, back into Leo, where she then applies by square
to Mars. This gives a 'no' answer: despite the possibility described by the compatible signs, the two planets are moving into 'conflict' by square.
As well, in any horary question, it is of utmost importance to consider the condition
of the significators: are they in dignity by sign, triplicity, domicile? Are they in detriment or fall?
In your chart, Virgo is in fall in Virgo, as Virgo is the opposite sign to Pisces, where Venus is exalted. This is not a good condition to be in; it means you have no power to act.
Mars, in Taurus, is in detriment, Taurus being the opposite sign to Scorpio, one of Mars' natural rulers. So the guy in question, while he perhaps likes you (he is in Venus' sign, Taurus), has no power to act, either, or is not necessarily as great as you think he is (detriment can be kind of yucky somehow).
As far as the houses go, yes, Venus joys in the 5th, but what this means for *your* question is that you have pleasure, possibly sex, on your mind. Venus is also in dignity by triplicity; so you are slightly dignified by house and by triplicity; but you are still in fall, still about to go retrograde.
Mars in the 1st house also describes your interest in the guy; as does the Moon, your 'emotions' ruler, placed in 'his' house, the 7th.
Look at the Moon; it is in Sagittarius, just about to conjoin with Jupiter, the greater benefic. But what does Jupiter rule in this chart? The 8th house and the 12th house; houses of secrets and 'illicit' things. It also rules 'his' money, so maybe you're after his money, really.
I'm just kidding, but you see how many different things go into a horary reading; it's not as simple as 'two earth signs = trine = yes answer'. I wish!
The astrologer must consider several things:
applying vs separating aspects
the condition of the significators, including sign, triplicy, term/face, etc.
look at the Moon, as she describes, very often, the undercurrents or main thrust of a question
Hope this helps!